It is absolutely ridiculous to explicitly say (as Maxwell has said) that it is acceptable to ban people because you do not like them, or because many people do not like them.
Nice strawman. Please give the actual quote word for word where he said that, instead of just saying that he said it.
[...] AnonyMint was banned [...]
AnonyMint [...] is responsible for a significant fraction of the technically competent people becoming largely inactive.
People who are really savvy with the technology have valuable time (as is the case for anyone with valuable skills). It's a waste of that time to spend it in a place where there are decent odds of their efforts being buried under a mountain of abusive nonsense. Even those few who don't find his dishonest practices extremely annoying are forced to admit that it's just a waste of time to be in the same venue as someone like that.
[...] AnonyMint's consistent conduct year after year is especially demoralizing. [...]
If a community can't choose [...] participants [...].
You can read the rest of his quote and see he clearly does not like Anunymint.
Further, it is difficult to take his post seriously when Greg's actions/behavior at Wikipedia have been described as "vandalism" by his peers at Wikipedia. Some have claimed that Greg continues to have a positive professional relationship with the admins at Wikipedia, however I have not seen evidence of this, nor have I seen anyone to claim to have affirmative direct knowledge of this.
Okay... So what did he change on wikipedia that was "vandalism"?
See
this and read for yourself.
As previously mentioned, Anunymint seems to have agreed to abide by the forum rules, which appears to have met the condition of unbanning him imposed by theymos.