The point is somewhat less that you will do it, as being able to do it implies a certain level of sanity to what you're buying + the ability to use the hardware even if the software goes away in some undefined-yet-predictable fashion.

It's sorta like checking if spare parts are available for your refrigerator or washing machine.

And that's why we educate others and let them know about their options. You have to start somewhere.

Buying a router, as opposed to connecting whatever your Internet provider gives you, is a very high technical bar.

You need to know why you want to spend money, which implies evaluating features, needs and possibilities, virtually guaranteeing that the user learns that OS or firmware updates and OpenWRT exist and are important.