I mean, some of those EOLed nearly a decade ago.

You can argue over what a reasonable EOL is, but all hardware is going to EOL at some point, and at that point, it isn't going to keep getting updates.

Throw enough money at a vendor, and I'm sure that you can get extended support contracts that will keep it going for however long people are willing to keep chucking money at a vendor -- some businesses pay for support on truly ancient hardware -- but this is a consumer broadband router. It's unlikely to make a lot of sense to do so on this -- the hardware isn't worth much, nor is it going to be terribly expensive to replace, and especially if you're using the wireless functionality, you probably want support for newer WiFi standards anyway that updated hardware will bring.

I do think that there's maybe a good argument that EOLing hardware should be handled in a better way. Like, maybe hardware should ship with an EOL sticker, so that someone can glance at hardware and see if it's "expired". Or maybe network hardware should have some sort of way of reporting EOL in response to a network query, so that someone can audit a network for EOLed hardware.

But EOLing hardware is gonna happen.