Every now and then we get a contentious, obnoxious know-it-all who in fact
has only rudimentary knowledge of aviation. Past examples include the Fish
Who Must Not Be Named, AcroBat, Skyloon, and others. There is at least one
such haunting the aviation groups even now. The current guy is small potatoes
compared to some of the previous ones.

These people are not friends of aviation. They have no idea what they are
talking about. They freely give advice that may be dangerous. They do not
care if they kill somebody else and in fact they probably hope they do.

Beware of anyone who continually posts advice or information that runs
counter to what the vast majority of seasoned pilots and flight instructors
here have to say. Yes, the rest of us can be wrong and we all have our
disagreements, but if someone stands out as continually disagreeing with
people who actually fly, he is not your friend. He is trying to kill you.
Treat him accordingly.