>>1411128Idk about "mastodon" proper, but many fediverse instances are indeed chock full of pedophiles. Poa.st is a prominent one where Metokur and Josh Moon went, and is also notable for being lolicon central and worse. Their admin is an unstable weirdo and probable pedo and their userbase hates "dramafags" aka kiwis and lolcow-followers, has a really, really expansive definition of "doxing" except when its someone the admin has a venretta against and then it is fine. Nasty place. Josh's instance (kiwifarms.cc) was kind of unremarkable unless you are super into KF but full of Josh sycophants, it's down now because of trannies attacking his infrastructure and unlikely to be back in usable form anytime soon. The other kiwi-adjacent instance is chudbuds.lol which caters to the Metokur crowd and such, of the three it's probably best it you like that kind of thing.
There's spinster.xyz which is supposedly radfem-oriented, it might be worth checking out, men are allowed I think but I haven't really checked it out.
I'm actually considering starting my own because there is nothing that fits the bill that I'd like to see which means (a) no porn, (b) mild "doxing" allowed (i.e. posting people's names and info is fine, no need to drop their whole ass contact info maybe; a lot of sites "doxing" rules are so expansive you can't even deadname a troon), (c) terfy talk allowed, (d) generally free-speech oriented but not filled with nazi sperging.