I'd argue that they're above average for the population, and below average for experts. Can they draw as well as an expert/professional illustrator? Probably not. Can they draw better than almost anyone who isn't a expert/professional illustrator? Probably.
I think the value we're losing is where people are bad at things, which is often where new ideas/approaches come from, but this is a macro metric, so it's a hard sell to the person struggling when there's an easy button available.
> I'd argue that they're above average for the population, and below average for experts. Can they draw as well as an expert/professional illustrator? Probably not. Can they draw better than almost anyone who isn't a expert/professional illustrator? Probably.
That's pretty much the definition of "average" (as most commonly used, to refer to "mean" rather than median or much less commonly mode), isn't it?