I do support FOSS, in fact I have written FOSS code as part of my job in the non-profit space for almost a decade. I'm thankful for all of the people who write code whether it's copyleft GPL or permissive MIT. But I still recognize that it's their code and that they are simply granting me a license to use it under certain conditions.
Generative AI takes those conditions and wipe their ass with them. I have a problem with that.