I don't find it misogynistic, really (not saying it isn't, just that I don't see it that way). It's just plain stupid, like it was funny the first time someone did it because it was creative and new and twisted the word in a smart way.
But in the last week I've seen at least 10 different communities with "porn" in the name and neither of them was porn. You're not being witty, you're not being funny, you're just copying something that's become quite embarrassing precisely because everyone copies it.
We were welcomed on the Fediverse when doing our research about where we could migrate from reddit. Nobody seemed bothered about the name. Only after we migrated from Reddit did a few people start about it. We could have changed it had we known. But now it's too late. What we did do is change our server from RimWorldP**N.cloud to https://rimworld.gallery to no longer make it appear like it could be NSFW (the name, not the site)