BMWs need a speeding indication more than a braking one /s

Sure, those could theoretically be used for backdoor access to your computer.

However, they are trivial to spot on most routers. If you see another device on the ethernet port that your computer connects to, then something weird is going on.

Another important consideration is the fact that those technologies are meant for ethernet, while most people use laptops with wifi.

There is no particular selling point. That’s why they force it.