The 20 character length limit is so annoying because I once had 2 distinct passwords (not in use anymore) that were both coincidentally 21 characters long. Character limiting me by a single character at the end of those old passwords was annoying because I usually ended up, for some services I needed, having to change up and use a completely new password. Back when I was a lot worse about reusing passwords than now.
The funny thing about that is that I am currently on my laptop getting keepassxc set up. This post has somehow motivated me to finally get a password manager.