The debate in the comment section here really boils down to: upstream freedom vs downstream freedom.
Copyleft licenses like GPL/Apache mandate upstream freedom: Upstream has the "freedom" to use anything downstream, including anything written by a corporation.
Non-copyleft FOSS licenses like MIT/BSD are about downstream freedom, which is more of a philosophically utilitarian view, where anyone who receives the software is free to use it however they want, including not giving their changes back to the community, on the assumption that this maximizes the utility of this free software in the world.
If you prioritize the former goal, then coding agents are a huge problem for you. If the latter, then coding agents are the best thing ever, because they give everyone access to an effectively unlimited amount of cheap code.
What you call 'downstream freedom' isn't very downstream. The real downstream is the end user, who should have the right to know what the software is doing on their computer, to recompile the software so it works on their machine with the software that is already on it, to make changes to the software so it can serve their needs.