@gamingonlinux This happened earlier, because joinmastodon.com really was a spamming site, the original site is .org. Then the .com was given to .org, now both are ok, but Twitter still bans it. So this seems not to be a typical Musk move, as far as I read somewhere.
@aus_der_UBahn @gamingonlinux No, this is new, the last archive prior to today has it unsuspended https://web.archive.org/web/20221211201332/https://twitter.com/joinmastodon
The domain thing is something else.