Thanks for this feedback! We agree that we could have done a better job providing the motivating background context behind this change.
As a result, we went back to the drawing board and rewrote the changelog from scratch to try and increase clarity: https://github.blog/changelog/2022-08-04-commit-comments-no-...
Does this help? We hope you'll accept our pull request. ;-)
And yes! We have engineering, product, and design leads supporting the PR experience who are super interested in getting your collective feedback about where we should take the experience next.