Marion feels an emptiness in his life. He is discontent and angry for things not going his way in life, so his way of getting back at people is to do what he does here at CathInfo.
A sociopath? Quite possibly.
An ass? Most definitely.

I don't agree with the way Mark 79 deals with and recommends medical "authorities" and "science". Also, available data of various countries show that most likely the flu was renamed covid-19 in the recent past. Mark 79 gets upset about this, since for some unknown reason a severe malady, he unfortunately suffered, has to be called covid-19 by all men on earth, and no other name.
Nothing really serious.