If someone says PRs need to be small, and I say here are some examples of huge PRs that I think are good, do you think these are still bad? That is not remotely invalid.
It's like responding to "you should wear a seatbelt, statistically they keep you safer in a crash" with "here are two people who got in a crash without a seatbelt and survived"
Where did grey-area say they need to be small. As in an absolute? They didn't, you just assumed that's what they meant and then went off the rails in your response.