Like everyone else, I am very skeptical that it is somehow related, for several reasons.
- He is just a small time streamer, I didn't watch his videos but it looks like typical clickbait content playing on people's paranoia. Why would Palantir care about it?
- I didn't watch the videos in question, but I suppose that he says that Palentir is evil because it is used by police forces to attack poor migrants, that kind of thing. Not only he is saying what everyone is saying, but it may be good advertising for Palantir, as it shows that they are good at their (evil) job.
- Streisand effect, I am sure that even the idiots at Palantir know that it may not be a good idea to give attention to a streamer who annoys them.
- Speaking of attention, it is highly likely that the streamer in question was unbanked for a completely unrelated reason but saw the opportunity to make buzz, and it seems to be working!
- There seem to be no further evidence connecting the two.