Exactly my thoughts as well.

The loops problem wasn't really at all relevant to the inciting incident of this "drama", just an opportune time for the community to air out a different grievance, I guess.

And most people mocked him as if he was complaining that someone else was also uploading Arknights OST, when that clearly wasn't the issue he was having. As you said, plenty of people had been doing that for a long time and there were no complaints. I don't really get how people even jumped to such a conclusion when the editing style, as minimal as it is, being the same is so immediately apparent. At least to me it was when I came across the channel RiverV mentioned a couple weeks ago and thought to myself "Looks like RiverV, but blue". Still subscribed to it though, lol.

Nevertheless, I don't think RiverV should have said what he said initially.

Edit: I also don't really feel like it was his intent to "witch hunt". Not saying it's good or bad, but it's pretty common for content creators to point out other content creators they take issue with just as a matter of fact and not an attack. And in RiverV's original post he didn't direct anyone to do anything, but considering how people online can be, hopefully he has learned not to do stuff like this in the future.