You're wrong. "Uncivil" is a vague term
and someone might just be having a
bad day or two (or three). No need to react harshly.
Nobody should be editing Wikipedia if they are having such a "bad day"
that they are unable to retain their composure and remain polite and
friendly. Harsher reactions to incivility would lead to people
thinking twice before posting inflammatory comments—surely, a good
thing. Some people might not like politeness and friendliness, of
course, and might leave the community, but that is also surely a good
thing.
—Thomas Larsen