Needlessly numbering lists when bullets would serve the purpose is one of my pet peeves.
see https://about.gitlab.com/handbook/communication/#writing-sty... number 13:
If you have multiple points in a comment or email, please number them. Numbered lists are easier to reference during a discussion over bulleted lists.
>28. If an email needs a response, write the answer at the top of it.
Alternatively, it feels like it could read:
> If an email includes a response, place it at the top of it. If an e-mail requires a response, also make that clear at the very top.
Re-reading the statement, maybe they simply mean replies should be above the original e-mail rather than inline?