I guess my concern over that video, despite completely agreeing with it, is that it just stirs up some of the people who aren’t willing to look at themselves and say “I’m a grown-ass man watching My Little Pony” and laugh at that a bit.
Some of the fandom is just on such a hair trigger some days, it feels like I can’t even make a joke, or tell someone off for being rude without getting cries of “hater!”

You don’t need to defend yourself so adamantly sometimes. If people are upset with what you like, that’s a problem on their end, not yours.