I also like it for myself, when I’m going over my own PRs before asking for a review - I will often amend commits to ensure the work is broken down correctly, each thing that should go together, does.
In a way, stacked PRs are just a higher-level abstraction of this too - same idea, keep work that goes together in the same place.
You downvote me but you just agreed with me. When was the last time you read individual commits of a PR? If your PR need to keep the history of the commits that means that you should split your PR into smaller one.
The last time I read individual commits of a PR? Maybe two hours ago. Before that, maybe five hours ago. Not everyone works like you do. Some people like clean commits. As I said, it’s very helpful when reviewing a PR, for me. I never said it was helpful for you.