I'm of the opinion that I would rather the details get lost often in zoom out, then in the few instances when people are zoomed close, it looks like low-poly speed painting.
I doubt the general consensus of people when the art is zoomed out will be 'wow, so much detail lost', but I would bet money that if they zoomed in and it wasn't detailed and pretty, it definitely would be 'oh, this looks like budget art'.
Most art is meant to be viewed at a distance, anyway.
The real trick is budgeting my time to were there's a balance here. Just enough for just enough.