Same, I found a place that I know I'l prioritize a lot so I joinded that instance instead of the official one because ran into a post pointing out just what you said.
Also I've seen admins and users in the most popular/main instances acting like if not allowing adult content will keep their instances safe from NSFL or troll content or as if that will save them from the problems to moderate that kind of content, which honestly is disingenuous and/or naive (at least until the instances actually have to deal with big constant activity).