Glorifying Bad Form or Praising Good Effort

There is a fine line when it comes to sacrificing form for the sake of the lift. It seems there's a 50/50 split on people that "we stress form over numbers," while the the half states "when you are pushing new numbers sometimes it's acceptable/normal to compromise form a bit."
I understand both sides of the coin and have mixed issues. I'd like to hear what other people think and why.

Here are video examples of people compromising technique to get lifts: