>>42753655
This has been happening for years, at least since 2019. It's a combination of several things; Elsagate in 2017, weird ass predatory comments on kid videos, and YouTube getting trouble with the FTC with the violation of COPPA in regards to collecting data on children.
In response, YT went full scorched earth and will just nuke comments on anything containing primarily children directed content. Much to many channel owners dismay. This is why in some videos you'll see a bunch of swears and shit at the end of the video or in the description. It's also really inconsistent, PinkiePieSwear had to blur his Flutterwonder video to get comments back but Sunshine and Celery Stalks had no problems. Kyrospawn's videos, which are literally just clips from the show, have comments disabled on some but not others. I do believe that channel owners can reinstate comments, but a majority of the owners of these pony videos have vanished, so it's unlikely.