I've been waiting for ages for someone to make a video like the one you recently published, as I feel almost the exact same when it comes to that side of the fandom. I appreciated the video a ton because it's long overdue someone call them out. For a while I felt crazy for saying I didn't like the show on Twitter only to inevitably get jumped by a bunch of zoomers with Rise profile pics, usually followed by the same comebacks: "Shut up boomer, you just don't like change" or "The animation is great, how can you hate this show?." In addition to all the points you brought up in the video, I've also noticed a couple of behaviors from my time interacting with the Rise fandom that really needs to be called out by the community at large a lot more. I agree wholeheartedly with the point made in the video that they are leeches who don't contribute anything to the franchise, but I would argue they are even worse, as they have overall been a detriment and harm to discussion and content surrounding TMNT.
Rise more than any other of the shows' fandoms I've noticed has this weird, cult-like following behind it, and their utter refusal to financially support or even invest time in TMNT as a franchise is a symptom of it. Their fans have convinced themselves it's the best thing since sliced bread and that complaints about its direction from longtime fans are simply "out of touch boomers," it's an unbelievably entitled mindset to think that people who have grown accustomed to a certain franchise don't have the right to dislike when something completely goes out of its way to subvert everything they know and love and are merely just old men yelling at clouds. The best analogy I can think of is the honestly notorious Snyder fandom within DC, who act with almost the exact same cult-like and dismissive manner when approaching criticism, especially when coupled with their annoying hashtags and the constant denial that their product was polarizing and/or just sucked, rather than Paramount/WB being big meanies who killed it for "no reason."
Which also leads me into my second point, I legitimately don't think Rise fans even like the TMNT as characters. Too many times I've seen them say on social media that Leo was "boring, and that "Rise actually gave him a personality" or that Raph was "a one-note tough guy," and Rise "made him an actually good brother." The Leo one especially pissed me off since he's always been my favorite of the 4. It's like these zoomers think the only way he could "have a personality" is if he acted and talked like a Joss Whedon character. Ignoring that both of these statements are categorically false, the fact they love to go out of their way to shit on past versions of the characters in order to prop up their in-name-only bastardizations of them makes me wonder if they even liked TMNT to begin with.
Lastly, the shipping. I've lost count of the amount of fujoshis, Tumblrites and other assorted dregs of the internet who have flooded into the TMNT fandom thanks to Rise. I am aware there was a small but noticeable shipping community (one which Sophie Campbell willingly and happily participated in too) within the fandom during 2012's run and prior, but it was nowhere near as obnoxious nor as in your face as it has been since Rise. I didn't even know what T-cest was until I saw it in a Rise fan's Twitter bio just a year ago. Rise fans also seem to have an obsession with constantly headcanoning Mikey and especially Leo as gay and/or transgender, and later treating it as gospel that fans must obey or else they're a bad person. It often extends into other TMNT products as well, polluting the content most normal fans want to see in those spaces, and they get ultra defensive about it when called out too.
I know this was a long rant, but for the longest time I felt like I was the only one who felt this way and it was refreshing enough to see someone finally call out the madness that has been allowed to perpetuate within this fandom. The more I see how its fanbase behaves, the more I began to despise the show and everything it did even more than I already do.