Yes, that's right. Nobody has the duty to disclosure the security bugs. It's the security researchers' principles, and if they want to follow that, they can follow that.
But don't take it further that the maintainers have the duty to fix the issues. They choose that career, don't make it sound like ffmpeg is forcing them to disclosure. Maintainers don't "deal" with any security researchers about those, and don't put the confidence that it "benefits maintainers" than "benefit researchers", unless the maintainers declare that themselves. In this case there's no patch, no fix, no PR either, just issue-submission. "You have more benefits" are the claims of the researchers who think that their issue-submission contributions top everything else.
Finding and disclosing the security are issue-submission contributions, and that's it. Don't make it as a gift or something. ffmpeg doesn't have the need to find these issues, and they don't pay for it for it either. And vice versa, they have no duties to fix the issues. They don't force the security researchers to find and disclose things. If security researchers want to do it themselves, they can do whatever they want, but stop at forcing duties to the maintainers. The only thing I don't agree with ffmpeg is bringing those issues social while they can just ignore them, that's it.
