Modern culture is very big on self deprecation and not having respect for the tiny details. If you don't hold yourself to standards, you can avoid people dragging you when you fail to live up to them. Better to say "I'm not an author ha ha" and have writing full of flaws, knowing the only people that are going to give you grief about it are people that "take it too seriously", then to try and present a well edited and highly professional piece of text and have a mistake missed in editing become the focal point of a bunch of pedants who want to tear you down for being high and mighty. It's a balancing act to be sure, but that's the current side of the spectrum the culture trends are on.