While YouTube
doesn't want to say it and keeps avoiding the question they do
hate FPS Videos. Remember it isn't humans but
AI flagging your videos to demonetize them.
That helps out in more cases than I'd like it to. YouTube basically punishes channels for having accurate Tags and Titles there.
Well it has the same tags so that's probably it.
The main mistake YouTube's done there is that they pushed out the AI too soon. Training an AI is a huge amount of work. You need a huge amount of manually reviewed samples (Even more for videos) to even just get started, once having fed them all in you still need to review everything and add Feedback to it for millions of videos. I don't think they did all of those steps in one month and if they did it's still at the level of throwing a coin to see whether or not the video gets ads.