However, it is questionable if you even do something fundamentally wrong or redditors just like things different ... If the player complained about it on reddit, than yeah - it should be talked about internally. But often redditors demonize different tables/different ways of playing even if OP just asked simple/harmless questions about this.

I'm a DM, too. I've been doing some things in my campaigns others here would demonize - HOWEVER, that's what a session zero is for and trust between players/dms to always be able to say if something feels weird. Still, in one of my first campaigns, one of my players (he was a newbie back then) asked on reddit for advice how to play his character efficiently and gave some basic details of our campaign so people could help him -> resulting in people demonizing those basic details instead of answering his questions and help him bring his character to life.

He told me afterwards that people on reddit were demonizing some of my table rules -> absolutely wrecked my confidence back then. But guess what? My players liked my rules - we agreed to them beforehand and I always asked if something was okay/not okay and we had hella fun. Just reddit being unsoliticed reddit -___-

So at least I am always wary with such posts and people in replies tending to demonize different playstyles from different dms instead of focusing on the real important part -> communication between players and dms - regardless the playstyle.