I have a Pixel 4a (with Calyx) for a few years already (start of 2021)
That’s just a little over three years ago.
This is why I run with Apple. Because even though their repairability sucks even more than Android, they are built like tanks and they get six to seven years of full OS updates, and not just security patches.
And the security patches continue for another year or two after that.
Nothing else comes close. Sure, the big players in Android have now claimed five years of OS updates, but I was promised Android 13 with my Nokia 7.2, yet I am still on the original Android 11 that the phone came with - Nokia never even released 12, much less 13 for that model.
I will believe these vendors once they are actually pushing Android v.X+5 to a phone that launched with v.X.