The point of a hobby isn’t to monetize it. Some things are allowed to just be fun.

Turning something you love into income changes what it is. Once money is attached, quality stops being optional, other people’s preferences start to matter, and the activity that used to be a refuge becomes another place you can fail. Some things are better protected than scaled. Being bad at a thing with no consequences is a resource, not a waste.

Keep one thing deliberately unprofessional. Play badly, make ugly stuff, do not post it, do not improve on a schedule. If somebody suggests selling it, you can say you would rather not.