Yes, effective communication strategies are a vital and required skill set for the most learned among us. It is the duty of the rational to communicate knowledge and understanding to the irrational. They certainly can't do it themselves.
This has happened to me multiple times, what’s worse is that I have over corrected myself a few times with being a bit too polite. Maybe I come off as sarcastic when I do that.
Yup, I try to post a ton of sources to compensate. That way hopefully they'll see the effort I put in and actually read past my rather direct way of communicating online.
It seems to work more often than not, but unfortunately lower effort posts are more frequently rewarded vs higher effort posts imo.