This has been something frustrating about switching to FUTO keyboard recently. Its auto space insertion isn't clever enough not to activate in username/email fields, compared to Gboard. So because many of my logins contain a period, I have to catch and remove all the extraneous spaces now.
Usernames can be written down or saved in a file for reference if needed. Only passwords really need to be memorized. (Password managers notwithstanding)
That's such brain dead reasoning. Only the password should be hidden - if the user can't tell whether their username is correct they need not to be using a computer...
60+ grams of sugar is a rough side effect to trade for hydration, friend. I'm sure there are at least some options for caffeinated beverages with low to no sugar in your country. I can relate to choosing something familiar as a default when I'm tired though.
Rather, the contradiction means you're wrong about one or both of those labels. But I doubt you haven't heard all that before.