This is only even an issue if your repo is unusually popular. I put repos out that I am excited about but almost no one else seems to care.
I don’t want the contributions of strangers and no one seems to want to contribute anyway. I open sourced it just to make a place for someone to find it and fork it if they please.
Are there really people out there who don’t realize its okay not to do unpaid labor for randos?
Yes, it's often the randos who feel this way.