I hope you read this @ebv and you consider returning.
I am gonna be clear, as I don't want more valuable users lost.
I have talked with a moderator about the issue you are angry with. Moderators are solving the issue, I don't know how, but there is some private emailing we are not seeing.
Their account has been suspended a day. On physics exchange they were suspended 1 month and never returned.
Please consider that moderators task is done for free and it is sometimes difficult. This site needs to be welcoming with every user and mods need to be exemplary.
I can't read those emails, but if the user doesn't changes their behaviour I guess finally there are more severe penalties possible.
I hope you can return once the issue is solved. We appreciate your also high activity, but with rigorous science.
Thanks for the time you got to answer some of our questions in any case, contributing to our library of knowledge.