Ah, I was getting insane for a second.

Look it up in Reddit, I am myself one of iCloud subreddit mods and me as many other users openly complain about this issue.

Don't. One simple reason, shadow blocking. Apple randomly blocks emails with no reason whatsoever, those emails will have all the green marks and still Apple will not accept them nor let you know (using SPAM folder).

Fantastic! I used to install a custom extension to change the browser agent to a desktop one.

I respectfully disagree with your opinion. Defaults can be powerful and convenient for users who could care nothing about what username they get and just click next.

Me personally, I would change it to the ones I like to use.

Wow! This is so great!