Some options for what's going on, without any weighting for probability:
1) It's all fake, and designed as a distraction from other news items, like Nord Stream. (Added, from Twitter: and/or to make you feel helpless, to make you fearful, and probably 50 other reasons.)
2) It's a "false flag" and elements, perhaps inner elite factions, have set this up for various reasons (perhaps congruent with #1).
3) It's military hysteria/jumpiness. After the China spy balloon hysteria, the military is trigger happy. Context: for decades, the U.S. military has grown complacent due to sometimes daily UFO sightings they can do nothing about. After the public and political lashing for being incompetent re: the balloon and not shooting it down, military is now hyper-vigilant. They may feel they can't simply ignore UFO reports, writing them off as anomalous and leaving it at that, lest they miss another scary spy balloon. So they're going after real UFOs, though some may just be prosaic objects.
4) Alien invasion!
All of them have their potential problems. With #3, the question is how they have reportedly been able to shoot these things down, assuming they count as "real" UFOs. It would suggest they're being allowed to shoot them down.