Samsung Messages is the only other, right?

At least you acknowledged it. The title of this post should have a misleading tag at best. There’s no wonder that no other major outlets have reported on this.

I’m guessing here, but are any of those products on that website both purchasable AND given a guaranteed product support time? Or to make it more specific, has Google ever killed off a phone (Nexus and Pixel years, so 15 years total) prior to its end of support date?

I don’t believe they have. Stadia, a non-phone product, is the closest thing. Of course it’s not a phone and Google also didn’t give a eol date before its release. When it was killed they refunded any purchased games. So I guess the better question is would you be fine with getting a refund in the amount of your purchase of a Pixel 8/Pro if they didn’t hold up their end of the bargain?

I know some of the comments in the community are tongue-in-cheek, but if Google were to keep the prior support date or do what they did today by increasing them, folks still wouldn’t be happy.