Absolutly, thats something bad about it. I decided to not use biometric date on my phone, so thats not a problem for me, but you have a valid point with that.
I am on a Pixel 7 Pro with GrapheneOS. I am absolutely happy with that device. The battery lasts about 3 days for me. I like the work the GrapheneOS team is doing. All those privacy and security enhancements are great to have.
I did not use the stock rom other the then to enable oem unlocking. So, I have no idea.