@gregthemiller I came into the replies looking for someone explaining why that isn't cryptographically viable, because this is the Fediverse after all, and I was not disappointed.
Personally, I'd like every password to be checked once as if my keystrokes were on Dvorak, and then again as if they were on Qwerty.
Funny story. Some big banks and investment companies did (don't know if they still do, I haven't checked recently) also stored your password in variations of lowercased, striped of spaces, and my favorite, reduced to US phone key alphabet mapping, and would accept any of them as valid.
They had touch tone phone systems that needed to be able to accept your password, so it kind of made sense, but then the web front end would accept the purely numeric representation too.
Greg the Miller
Deborah Pickett
Pseudo Nym