Well, I often wish that people use kinder language in this forum, so I know where you're coming from, but honestly, it's never going to happen. Some people are just curt and brusque or pithy and rather sarcastic and come off as hostile and/or cold, and yet they're not rude or uncivil in what they're saying. I can think of posters, of earlier versions of this forum and of the current version, who are like that. It can make this forum perhaps a less pleasant place, but there's no guarantee, either within etiquette itself or the rules of this forum, of pleasant treatment.
It unfortunately will always be that way because etiquette regulates behavior, but it can't really regulate basic personalities.