Yes. But they don’t upstream. Why would they?
I feel that this is mostly a kneejerk reaction to AI and Google in general, with people coming up with arguments to support their reaction after already forming an opinion.
But it's developers do offer paid consulting as ffmpeg maintainers, which Google does pay for.
Let's just saying they're being asshole-ish, which is a problem for volunteer projects just as much as non-volunteer ones.
The ffmpeg twitter sucks.