Absolutely. I've had the identical experience hiring artists for game art/UI. Every once in a while you find an artist who is stellar but most everyone else is not that good.
The TFA is pointing to a prompting skills/creativity issue, but I get equally frustrated with hired artists as with genAI image models. Even with skilled human artists (remote/offshore), I find they're best at copying a particular style so I end up having to google for images of the look that we're targeting, then spend hours painstakingly describing the changes needed. Then iterating many times, and with artists in remote time zones that means each iteration takes a whole day. The process is ironically very similar to using AI image models but can take much longer due to time zones.