[noahtallen]

You can very easily rewrite your commit message on GitHub when squash merging. Since the organizations I work exclusively use squash merge, I often just update the commit to be more valuable, listing the important changes it contains. (And of course the PR in GitHub will contain the commit history of the branch that was squashed, as well as any discussion.)

IMO, this is a lot simpler and easier to do than rebasing your branch to have a flawless history.