Also see comment(s) in #3649.

Here's a good Reddit thread showing how many people hate this: https://www.reddit.com/r/Bogleheads/comments/1320at3/treasury_direct_to_remove_virtual_keyboard/
It is indeed a pain if you use a password manager, and while it avoids issues with keyloggers, I doubt it does in many cases because people probably copy out of password managers into a notepad, and keyboard loggers probably also come alongside clipboard loggers.
I'm leaving this open as maybe it's worth consideration as an option, maybe there are other views.