It's that simple. Yes, throw out your old crappy routers and pay more for routers which are properly supported by the vendor.
... okay. I guess if a router is "properly supported", that means it doesn't have any bugs, so it will never need to be field-updated under any circumstances.
Also, if it's "properly supported", that means neither the manufacturer nor anyone in the supply chain will ever insert any kind of malware, so there's no reason to allow the code to be inspected for correctness.
Also, those 11 million VW diesel owners should have paid more for a properly supported car.