> As a maintainer, why would you want people to be able to deny making a given commit? or have them come in completely anonymously?

1. Because you trust code for what it is and are willing to trade attribution surety for a lesser ask of contributors

2. Because you care about certain principles of anonymity and non-repudiation and want to respect them in your own plainly legitimate project.

3. Because your project is or risks becoming illegitimate in some jurisdiction and you want to protect your contributors as best you can.

It'd be nice if we can continue to respect these reasons as valid even while allowing other maintainers to exercise different policies.