Interesting thread! So while I haven't read Tomasi'sd books, I have been introduced to the "manosphere" or "red pill community" a few years ago, and have spent a decent amount of time trying to learn what that is all about. In my case, it started by watching something called "Blue Print Decoded" by a guy who calls himself Tyler Durden (real name Owen Cook), and he founded one of the most prolific "red pill" companies called "Real Social Dynamics". Luckily, I wasn't the demographic they're selling to, just like most on this forum are not (young, impressionable naive hormonal 20-something men desperate to get good with girls), so it was easier to see the manipulation, the inconsistencies. The irony is while they teach "game", they're utilizing just as much "game" to get men to buy-in, and I mean that literally, the amount of MONEY involved that they get out of these guys is mind boggling! I spent some time mulling it all over, and initially I started with some "AHA" moments, followed by just as many "something isn't right here.." moments, which started to make sense over time.
So here's my take-away:
First of all, you may have heard of "Real Social Dynamics" without realizing what it is - here is some info, including one of its main instructors, Julien Blanc:
Disgusting sexual predator: Julien Blanc, the 'female attraction' expert, glorifies sexual violence -- Sott.net
Leading UK pick up artist says he doesn't know how Julien Blanc sleeps at night
And here's a really nice and thorough investigation someone did on Reddit about their community and exactly the kind of behavior they're teaching and promoting. If this doesn't scream "psychopaths - run away, and fast", I don't know what will:
Granted, this is not Tomasi - but they are honestly in the same "larger group" - the red pill community, and "RSD" and Tomasi are big names in this community - different groups, authors, slightly personalized slants, but largely the same idea.
The thing is, the material isn't all incorrect - like others have mentioned, if applied and practiced, it works. And there are nuggets of truth there that certainly can be enlightening, and can teach you something about yourself to some degree. You gotta have that if you want to attract a huge following and make tons of money, you gotta have your truth sandwich. But you can say the same about the Bible, or Freud, or pretty much any scizhoid declaration out there - it's gotta be based around certain truths to "blow people's minds" with biological and behavioral facts they may not have thought of before, and then when you get their attention, you layer your bullshit right in.
Red-pill stuff tries to veil itself as "self development" - in other words, the "sophisticated" red-pill groups distance themselves from typical pick-up artists by claiming that they don't teach you techniques and behaviors, but help you clean out your conditioning and basically clean out your machine by getting rid of learned thoughts and behaviors that turned you into a "beta", to help reveal the natural alpha hiding on the inside! It sounds downright holistic if you buy the sales pitch! And as I mentioned, it doesn't mean there's nothing to be learned or it's all untrue or anything - it's just really evil stuff veiled in some actual self-development, but with a very particular slant, which kinda nullifies any actual development you'd get from these sources.
Bottom line - sex sells. Hormonal young guys want sex, and lots of it. This group promises to turn you into a "sex god" if you go to enough seminars, watch their videos, read their books, and pay them thousands of dollars to take you on "boot camps" - basically outings where they coach you in real-time and push you to approach women as they give you critical corrections. All you will get out of this is how to treat women as objects, and how to get really good at manipulating impressionable women, and let's be honest, they're looking for dumb impressionable women, not independent developer ones, who will see through it and find you wanting, despite your "alphaness".
None of this will teach you how to have a loving, stable, and mutually beneficial long-term relationship where both people grow together and achieve something higher over time. If all you want is to have meaningless sex with as many partners as possible, well, this will teach you how to manipulate people's machines to accomplish this. But if you're even remotely interested in self-development, don't let this material fool you into acting like this is what it will do - there are FAR better books/materials out there for that, that aren't made by pathological materialists.
If you want to read the material and get familiar with it, that's your choice, but my advice for what it's worth is to do so only if you're thinking with a hammer, if you can see the "line of force" and constantly ask yourself what is this trying to teach me and why? Who is the target audience, how does one apply this, and why? Honestly, a lot of this has already been dissected and mentioned in this thread, so I won't belabor the point.
But caveat lector! It doesn't just teach you to manipulate women, it will also do its best to manipulate you, because it tries to latch on to your own programs/issues/fears/desires to get you interested.