Does it? I use Hide My Email largely without integration to the Apple ecosystem - I generate new emails on icloud.com and copy/paste them to login forms before saving to 1Password.

Same, Hide My Email is pretty much the only Apple service I use and the aliases are only for accounts I don't really care about.

I use this wonderful extension to make it easy to generate aliases https://chromewebstore.google.com/detail/icloud-hide-my-emai...