Google Drops Software Support for Pixel 4a Just 3 Years After Its Release
wccftech.com
wccftech.com
Some devices get more than others.
https://doc.e.foundation/devices and https://wiki.lineageos.org/devices/#google both list quite a few of them, but unknown if it's that they are currently available but once the blobs get locked it'll be the same story: unsupported
And, of course, going with "community" distros also nuke Play services and thus almost certainly will not allow Google Pay or other niceties
That's uncharitable wording. They're more like "Our main goal is providing a secure OS for your device. We can't promise that, if your device no longer receives firmware updates." GrapheneOS is quite principled in not compromising the device security, and I think it should be respected (maybe it's not the OS for you, but it's OK, because there are alternatives).
That's not the same thing for eos or lineageos.