There's also the posters intent too, that comes into it alot.
Randomperson 2: "So and so is a moron, with stupid moronic behaviour"
Randomperson 1: "Please don't use moron in that context
Randomperson 2: "Sorry didn't know it was offensive, i won't use it again"
Absolutly fine, no need for a deletion.
vsThis:
Randomperosn 2: "So and so is a moron, with stupid moronic behaviour"
Randomperson 1: "Please don't use moron in that context"
Randomperosn 2: "Grow Da fuck up, i can use what i like it's welsh for carrot. Moron moron moron"