Often critiques are subjective — just people’s opinions, with nothing to back it up except other opinions. Suggesting A/B testing is pretty hard to argue with. Often times what the client (or team) thinks is best is not, in fact, what performs best.
23 years in the business brought me to a place of suggesting we let the customers/visitors show us what works instead of guessing.
I like that you identified good vs bad critique. I think that’s real helpful to people who are struggling with how to respond to feedback.