Gigabit / 2.5 Gbit connectivity is already obsolete. Any modern product must have 10gbe WAN with the hardware to back up NAT at that throughput.

That's such an assumption of needs. For someone to be using a 10g capable NAT would be some sort of super nerd with such a small portion of the population. More and more households have no compute device other than their devices. With WiFi routers now being sold with OpenWRT installed, it no longer means you're in the nerd category for installing it.

200 horsepower vehicles are also obsolete. Any modern car should have 500 horsepower with the braking and safety systems to back it up.

It's not obsolete, it's basically the contemporary baseline. Remember, this is a cheap device. And unlike most Chinese garbage, you can be reasonably certain that it isn't backdoored.

Not for a cheapish device that is suitable for my parents that I'd be happy to administer.

No need for a Tundra when an electric scooter does the job.

For a home network 2.5 is plenty.