If they have given up on the show then why do they continue making their horrible "everything is terrible about this show" videos? I mean if they truly didn't care anymore they'd just move on. But hey, spreading hate gets them clicks and therefore money, I guess...
And these videos do have an impact, unfortunately. I was reading a tweet from someone the other day that basically went like "I enjoyed PIC but then I watched some Youtube videos that made it clear to me why the show is terrible, and I found myself in agreement, and now I'm far more critical towards it, it really was bad". I also keep reading tweets that go like "I kinda want to check out PIC but I've heard so many bad things about it on YouTube that I don't think I should watch it". YouTube is a MASSIVE source of information for a lot of people (whether this is questionable or not is a debate for another day), and the casual science fiction fan who has maybe just watched a bunch of TNG episodes and is now curious about what PIC is like won't be able to notice the anti-everything-new-Trek agenda behind the videos and will take them at face value. I'm not concerned about those who watch those videos and drink up the hate like kool-aid, those are "beyond help", but I am concerned about casual fans who are being influenced in a massive way by these people.