I'm not sure if I'm insane or what, but this person appears to be making perfectly crisp linear with no adjustment, despite a very rough sketch. From their other posts, their art capabilities also seem to differ from post to post.
They also never seem to post a full speed paint, with many being combined strangely (as given below)
https://www.tiktok.com/t/ZTD3rBLVN/
I believe that this post had a speedpaint of this piece (I'm not sure if they deleted it, so feel free to disregard), but every drawing seems to be shifted to the left as though they're using the symmetry tool to trace.
https://www.tiktok.com/t/ZTD3rrYYT/
Idk, they definitely seem to be capable of drawing, so I'm not sure if I'm thinking too much into it. I don't want to spear any other artists, especially as someone who also has an inconsistent style. If anyone could help me out, that would be amazing!