It seems like a moderator, someone other than the author, should decide which comments to delete. I can understand deleting comments that are un-necessarily disrespectful etc., but some authors delete comments which provide legitimate counter-arguments, or question their methods, etc.
I did not know that authors had this option. I raised some concerns about an author who doesn't have any skin in the game, and they told me point blank to get lost.
Blinding flash of the obvious - several SA authors (the name "Rida Morwa" comes quickly to mind) are selling you a sack of half-truths (and, sometimes, outright lies.) Find a better service, and give THEM your money, time, and attention. Or expect more of the same. If nothing changes, nothing changes.
"Think of it as evolution in action."
Customer support service by UserEcho