I do when I'm working on internal projects and there's no reason for me to relicense/release code that's still in development. There are practical limits to enf

I do when I'm working on internal projects and there's no reason for me to relicense/release code that's still in development. There are practical limits to enforcement. I certainly don't contact the copyright holder when I see someone with an avatar of Family Guy, but you can if you wanted. It's exceedingly unlikely anything happens to them.