There is certainly some truth to it, but the feature itself is really neutral if you think about it. It depends on how it is used. The usage here can differ from the usage on Facebook or other platforms: It depends on the persons. If we all use it intelligently, it will be an intelligent feature. If we all use it stupidly, it will be a stupid feature. In any case, it does provide a feedback mechanism to the author, and helps prevent cluttering threads with "Thanks!", "Me too!", "Ditto!", "+1" etc. messages.
Personally, here, I hit "Like" when I appreciate the effort that has been put into a post, and/or if it expresses thoughts that I could/would/should have written myself. Thus, each "like" a post receives will have a slightly different meaning, depending on the person.
I tend to feel the same way, but we'll see.
Now there is an extra level of pressure. -If, for instance, a person disagrees with a popular post, they have to overcome the fear of inciting disapproval from the list of names tagged next to the "Thumbs Up" symbol.
Where does the extra level of pressure come from - only from yourself - I tend to read the post itself, and not the number of likes appended to it, if I agree with the post and have nothing extra to add, then I will 'like' it. It saves on otherwise cluttering up the thread, by just saying something like 'I agree'.
I am generally inclined to perk up and pay attention when somebody is going against the flow. -It is often the brave soul who sees something amiss and who has the courage to speak up that forwards learning, risking very real (fair or unfair) punishment at a variety of levels. Will that happen less frequently? Will it simply require more courage?
If there is something important to say regarding the post, itself, even if it goes against the flow, then it is important to say it. This is how new learning evolves.
Because when changing course or adding a new feature, I think it's probably smart to *really* think it through before fully embracing it. Even if it turns out to be a net positive, (and it may very well be so), then knowing why has value.
There are times when it is quicker to go with the gut and see what happens, especially when 'the feature itself is really neutral'. Often this will prove to produce results, opinions, quicker than when the feature has been '*really* thought through before fully embracing it'.