"Reasonable control" is only possible in the legal sense, not the real sense, so I doubt artists care about it, outside of monetisation, which is what we're attempting to replace.
Right now as we are speaking, the art of thousands upon thousands of those creators is being stolen constantly by legally gray AI scraping by huge companies, or illegally by smaller merch leeches.
The internet makes data protection impossible.
The law, only prevents the most egregious kinds of 'monetisation with someone else's art', and is unable to stop the rest, for practical reasons.
If artists didn't have to worry about being compensated enough... Would they still want to have "reasonable control"? Would we still "risk" them being "demotivated", from being unable to forbid others specifically from making money with their ideas?
I think the human drive to create isn't that neurotic. I think this kind of "demotivation" only happens for the kind of human who has been abused for years by the rules of the absurd economy we live in. And that's what we're saying should change.