That shouldn't be news to anyone. It wasn't that long ago that people banded together to say "Hey, gay and lesbian people are okay and we shouldn't be stepping on their rights and way of life." Now everyone is like "Screw that, only what I'm into matters!" and "You know/talk to THAT guy? I'm blocking you!" Really, what is the deal with so much intolerance, especially in a group that already has its inherent kinks on full display? If you can't be friends with someone because they have a kink you don't like or they are friends with someone who's kink you disagree with, then you need to re-evaluate what friendship means to you. Some people will just up and block you for being friends with, or simply watching a certain artist or artists, without even talking to you about it. Zero communication. Just block and shun. It's a giant step backwards. Why? What if they're not even into the same things, and they simply like to talk to them? I'm sure we can all relate to people judging us based on what we are into, be it diapers, regression, TG, macro, micro, gore, transformation, shota/loli, or just vanilla furry. It never feels good, especially when it comes from people you know and thought you were friends with. If it makes you happy, and isn't hurting anyone, then what's the problem? Are they shoving the art or kink in your face after you politely asked them not to? Are they somehow magically putting the stuff you disprove of onto your computer?
Of course, it's different if someone has done awful, wrong, or illegal things in real life. Most of the time, these are just fantasies. We can't actually get younger, we can't shrink or grow to giant size, we can't transform into animals, but that's also the appeal. Being fantasy means it doesn't have to play by the rules of reality. On the other hand, it can also be annoying and cause depression, because so many of us wish we could become younger and/or smaller and/or giant. Being a babyfur or being into regression, or even shota stuff doesn't mean you want to do things with actual children, and it never has. In my experience, people simply wish they were young again, diapered again, cared for again, loved again, and be carefree. Nothing wrong with that at all. If you can't separate the two in your head, then maybe you should do some research. Not just research in your own safe space either, branch out and read up on the truth before judging others. Or, if you're that determined to block that person, at least have the decency to tell them why and try talking about it before doing so.
We live in an age where talking to someone is so easy, yet so many people will just refuse to do so. Sometimes when they do, they still reject you and eventually block you because they cannot separate fantasy from reality. We can't help what we're into, and it isn't wrong. Blocking and shunning people will only lead to you having less friends. Friends are rare. True friends are even more rare. When we have friends, good friends, we should hold onto them and not be so intolerant. The world would be a much better place if we could all just practice reason, understanding, and tolerance.