I have long since left browser and OS password managers behind. I now use Vaultwarden. I like it because it will check passwords against your service for me (In fact, I pay for a subscription). Recently, I was on my iPad, and it told me that some of my passwords had been compromised. I had forgotten about having passwords on there. Most of them were old and changed. The one that surprised me was for my security camera system. It has not been changed. This password has been stored for a while and checked many times through HIBP (by way of vaultwarden). This means that Apple caught a breach that HIBP missed.

I am not saying they are better. I just wonder if you are adding new methods of finding these leaked passwords, and/or investigating where Apple and Google source theirs from?