I went through three Pixels (6, 6 pro, and 7) with Graphene before I finally gave up. Not because of Graphene, but because Pixels break so easily, and even small damage to the screen will almost certainly render the phone unusable. I'm a contractor, and I need a phone that can handle some moderate abuse. But even with Otterbox cases, my Pixels could just not hang.
Sadly, with a heavy heart and a wounded concience, I've gone back to Samsung. Yes, they spy on me, and yes I absolutely detest it, but at least I can drop my phone once a month and not have to replace it or pay $200 for a screen replacement.
This line of reasoning kept me away from password managers for a while, but I've been using Bitwarden for almost a year now, and I could never go back.
You're technically right, but a better way to look at it is that it reduces your surface of attack from many weak points, down to one, very strong and secure point (assuming you use a reasonably strong password for your vault, and don't log into your vault on public networks or anything like that).
But at the end of the day, using a password manager is vastly superior to relying on your memory, which is what many people still do.