Comment by mort96

Small commits where each commit represents nothing of value and doesn't compile are terrible for git bisect. And for code review.

A code reviewer doesn't care that you spent 10 days across 100 commits tweaking some small piece of code, the code reviewer cares about what you ended up with.

The bisecter probably wants to compile the code at every commit to try and see if they can reproduce a bug. Commits which don't compile force the bisecter to step through commits one by one until they find one which compiles, linearizing a process which should be logarithmic.