Comment by chw9e

In my experience, mandatory code reviews seldom work very well. Usually it's either stamping PRs or you always run the risk of someone just blocking stuff in an unreasonable manner.

For the most part, code reviews should be optional - if you want to get a review from someone, tag them on your PR and ask. If someone you didn't tag spots something and your PR landed, you can always figure it out and still make a fix.

I will give an exception to maybe super fragile parts of the code but ideally you can refactor/build tests/do something else that doesn't require blocking code review to land changes.