Usually just means it's compromised on the dark web somewhere but unless your PM box contains nude pictures of
@Raoul I wouldn't worry about it too much.
At this point just expect just about any username and PW you have will be compromised at some pt. Only ones ill immediately change are cases where my pw or username matches those used on multiple sites, or links to a site of app that does contain sensitive information. In general though its not a bad idea to use MFA for anything confidential etc like financials, email account. I also have Google's PW manager create completely random passwords for me now so it's extremely hard to guess yet I don't have to remember it.