I/we do but sometimes you just overlook something especially if there are a lot of changes. But having someone else review what you do almost completely removes that problem.

I usually do not look through all commits again when a basic review already happend and i "just" integrate the review comments. That is where for me personally these problems happen that git-autofixup is sometimes wrong but in over a few thousand commits in the last months this happend only thrice. Which for me just speaks for the tool IMHO. Ow the original author big time :-)