I'm an artist and I've never heard of him until now, but then again I am not into TikTok. Drawing people in public is pretty basic stuff for people who get a degree in art; it's not anything new or original. He is clearly very good at gaining an audience which is a good skill, and his portraits seem very skillful from what I can see. Realism is a very minor type of art since photography exists; outside of TikTok it's not a big market. But dealing with criticism is also a necessary skill which he seems to lack. One person is an artist; the other 8B people are critics.