@hkc
Between 5 and 10.

By the way these bots exists are not because of "lack of moderation".
You can't moderate something you can't see until users reported it to you. And most of the bots were sending a SMALL batch of DM's until going offline. It's not that one account was sending thousands of messages and nobody took care of that.

Also mastodon doesn't have very good anti-spam measures. So blaming moderation team of any instance (even mastodon.social) for that is quite shortsighted.