Please. Captcha by default. Email domain filters. Auto-block federation from servers that don’t respect. By default. Urgent.
And yes, to refute some comments, this publication is being upvoted by bots. A single computer was needed, not “thousands of dollars” spent.
To be honest, I’m surprised that that username was allowed (or not reserved). It seems like it would introduce a risk where people could pose as Lemmy developers or something along those lines.