@darius it largely depends on your goals with Mastodon. I've heard many people wanting to migrate here from Twitter due to the...new CEO. It's a huge opportunity to popularize the Fediverse and turning off open registration turns them away. For me, this was the only remotely relevant instance where I could register and that's not good. Then again, every community has the right and interest to defend itself.

@darius fair point!

Not sure what's the optimal solution.