Every single person in history who has ever made anything has had haters in abundance. People who just hate to hate, or demand outrageous things, or try to belittle you or make you feel bad for some stigma they confabulated, or feel entitled to infinite work for free.

It's something people need to be made aware of so they can be prepared for it.

Otherwise you can end up getting sucked into the frame of these haters, stuck in a perpetual loop of defending yourself and raising your blood pressure until you quit, giving up whatever made you interested in the project in the first place.