I think its more of a cultural thing than an effect of tipping, but service in the US is usually pretty high quality.
"service with a FORCED smile" which I find far worse than service without a smile.
"PRETEND the customer is always right" which happens in non-tipping culture too (do whatever makes the least trouble for yourself at work).
Any Asian country I've been to had much better service than the US. France (Paris) had excellent service. Greece had extremely nice service. These are all low- or no- tipping places.