There's nothing whatsoever wrong with monetizing hobbies. What's wrong is when you change how you approach your hobbies to appeal to the people paying you money. Following a content upload schedule and unironically begging your audience to like, comment and subscribe to your content are prime examples of ways to come off as a phony.
The post seems to be conflating the sheer act of making any money off the hobby with the bad things that come from it, and so I think bdw5204's comment makes sense.
