> They hide big diffs behind a “load more” link, and as a result people often fail to code review the most substantial part of a change because they scan right past it, thinking it’s a removed file or binary or something.
This. Every PR I have to do ctrl-F "load diff" and then immediately click on _all_ of the diffs. It's !@#$ing annoying.
I've also lost comments when the comment is part of a review and pushed to the PR after the the PR has been merged by someone else.