> full name, email and location in order to manage your hardware and software, yet systemd has had optional fields for those for years and nobody complained.

maybe we should complain

Why, it's fine to have these values in a corporate environment: name, work email, office location. I'd be fine with an ability to store the birth date, the blood type, the zodiac sign, actually an arbitrary list of key-value pairs, as long as it's optional.

It's only a problem when the OS insists on recording your private information to let you access your private account.