inconsistent arm length
Because it is impossible for humans to get anatomy wrong, or just not care. Right panel is a compromise: Gesture wants negative space to the right (gal is running), panel width is limited, don’t want to cut off hand, so make arms different length it’s a comic FFS.
the distorted/melty flowers in the third panel
Because everything humans paint is hyperrealistic and infinite detail. Impressionist technique doesn’t exist.
the bottom of the TV stand
…what? Best guess I have is that you think that it’s geometrically wrong but it just doesn’t have a door, drawers, or such. Which btw would break the composition.
kinda melty/bendy lines here and there
Smudge tool don’t exist.
Yes and I can’t make heads or tails of what you want to say with it.
https://www.youtube.com/watch?v=jgDYlmRwXF8
What I’m hearing from you is vague gesturing, “don’t think I’m confused about that kind of stuff” and “trust me, bro”.
“Not how humans would draw them” doesn’t cut it. Explain how it differs. Zooming in on those flowers “hah they don’t look like flowers” does not prove anything, of course they’re not perfect: They’re in the background. Too much detail would make them pop out, that’s why you draw the impression of detail, not actual detail. The artist in the video is a master at that.