If they ask for something outside WCAG, I say no, that doesn't meet the standards required and do not ask if they want to respect the standard.

I learned to stop asking permission to use my professional judgement when I went to a boss with an active password/login leak that was risking an important dataset and his response was "if it hasn't leaked, let's just not worry about it and leave it"

What do you know, the next morning he was informed of a leak and I was approved to fix the issue. The leak was not real, of course.