> What's upsetting is comments that confidently state inaccurate or clearly wrong statements, thereby spreading misconceptions

The bulk of the people in this thread clearly have no grasp of what UB is, even though they are very vocal in the way they parrot their misconceptions and outright absurdities. They would never write half the absurd and misguided claims they did if they were even aware the standards explicitly use the term "non-portable" to define UB.