Abuse is spam, doxxing, fraud, etc. Very narrow. I don't think this should include something like banning someone for saying "learn to code" because its a "targeted harassment campaign" [0]. However you can pose with the severed head of a sitting US president and that'll be okay and still standing up today [1] . Come on.
"Banning someone from a platform for expressing an offensive view is not moderation"
What if an offensive view creates abuse? Who defines obvious?