Like I said, it's not that people don't care about lesser detailed models... it's just that there's literally much less to comment on!
A fully detailed model, with tons of underhood detail, PE, superdetailed chassis, etc. simply has more going on than a simple OOB buildup, and therefore there's a lot more to comment on.
Again, you can't compare the two, they're really two very different styles of building. Both are equally legitimate.