From my perspective, capturing simplicity really well is also really difficult. However maybe those "advanced" artists just like to see the "simpler" artists make something they never thought of or could picture in their heads and enjoying the result of a different view than theirs.
Hamonikafe🆖Sometimes I'd see people with really advanced, intricate, complex, etc, art styles react to simpler art the same way normal people react to their "fancier" art, and sometimes say it's hard for them to draw in those kinds of simpler styles and I never quite fully understood that