The vocal frankly will always be a minority of any discrete group. Adding my two cents (value as you will) .
I don't actually see a problem provided it's not taking resources away from something core to the game. With big studios it's more about allocation of resources. But these projects?
I doubt you have multiple coders building parallel systems that have to be carefully interlocked to cause minimal issues (which costs even more as programmers run they crap down, usually through somebody else's code)
I doubt you have teams of artists and musicians constantly adding content to the game.
In which case what's the harm of throwing a artist who has free time some extra money for bonus content from those supplying it?
It's the internet. Retards are everywhere. My personal philosophy is to only consider what they say if it's potentially useful, positive or negative. "I like your work" is great and feels good but not really useful. "It's crap" "your a shill" "git gud scrub" are not only useless but also annoying. In the former case the correct response is 'great I'm glad you like it's, but in the latter it's 'okay bye then.'
Some people will always cry about stupid stuff. Screw em. Don't chase the "wider audience", that's a myth that has killed many many projects. just make it good.