I'm not sure if this question is in good faith. I would ask whether you have any proximity to any sort of creative or filmmaking work (in response to "who keys anymore"- several, several, examples), but it's honestly worse if the answer is yes. I hope the field isn't so far gone that we're genuinely asking what's the point if, god forbid, someone wants to put a real person in front of a green screen instead of a generative avatar.

Haha- yes a filmmaker for 25+ years- had an original self made/produced animated feature film in the Sundance film festival, have made 6 original animated feature films- I've made several green screen heavy projects in the past- they suck for everyone involved except vfx companies/software or plugin companies. I'm still making films- heavily modified game engine cg + mocap- green screen is terrible for everyone and its a good thing its dead.