They also crossposted their post >20 times according to reddit search
IMO the better way to do the same thing would have been to write a post specific to each tool addressing how it could integrate with Lemmy.
Which one?
It comes complete with a wiki page that lists many of them: https://www.reddit.com/r/RedditAlternatives/comments/yttdlc/...
They absolutely do. Try linking to rdrama.net, you'll get shadowbanned.
On whole plebbit or just some subs?
I’m sure there’s a limit to that too, especially if promoting just a single page. But even then a warning may have been a better response.
Then there are the less malicious ones, like the quote bots on Lord of the Rings subs.
If this person was banned for having a template message about migrating to a different site, it shows a priority by reddit admins to eliminate message spreading about a competitor. It's trash.
Spam is spam guys.