Honestly, I think the MDN team is in the right here.
The author of the PR provided almost no explanation for the addition and left the template essentially blank. Then the team provided a detailed explanation of a very reasonable policy, to which the PR author responded with what frankly reads like a temper tantrum.
Especially after the xz incident, maintainers should be very very wary of contributors who use manipulative techniques to try to get things merged against policy, and contributors who are trying to help in good faith should be patient and understanding when they hit those barriers.
The author of the PR provided almost no explanation for the addition and left the template essentially blank. Then the team provided a detailed explanation of a very reasonable policy, to which the PR author responded with what frankly reads like a temper tantrum.
Especially after the xz incident, maintainers should be very very wary of contributors who use manipulative techniques to try to get things merged against policy, and contributors who are trying to help in good faith should be patient and understanding when they hit those barriers.