Huh. Maybe. I think the labs are already doing something like this, though. Some companies pay you to write stuff more interesting than internet mediocrity. They even pay extra for specialist knowledge. Those companies then sell that writing to the labs, who use it to train their LLMs.

Side point: Consider writing shorter posts, and using LLMs to critique and shorten rather than to (co)write the post itself. Your post is kind of interesting, but a lot longer than it needs to be.