I have 2,045 passwords to track, and therefore use a password manager (1Password) to maintain some semblance of sanity. I imagine many others do too.
Being unable to paste a password into the launcher's password field encourages use of simpler, easier to type passwords, which are less secure than those generated by a password manager.
Would you please permit pasting of a character string from the clipboard, into the password field on the launcher's login screen?