It's not that hard to enable 2fa & force password manager usage. And it's not that hard to use it. In fact a pw manager alone is much more convenient than remembering passwords. The only people I know who "can't remember their passwords and are locked out" are people who don't use the pw manager and have dogs*it passwords with tiny variants they forget. They often need multiple attempts to log in anywhere. Yeah 2fa & pw manager is a tick more complicated but it's not like it take hours, it takes minutes per day. And you protect against stuff like this. No sympathy, sorry.
It is actually very hard to force password manager usage. You can encourage it, educate, but forcing it? How do you do that.