It's just being realistic. Obviously, it would be great if there were laws guaranteeing the users' right to have full control over devices they've purchased, but I think most people have accepted that this ship has sailed. So we can only really hang on to the little control we still have, which is usually achieved without the manufacturer's permission.
BTW: Stallman is brought up too which is actually very relevant for why this is such a losing argument: jailbreaks are cool and all but today they are basically irrelevant for the average user. This is just like Stallman fighting for GPL is nice but only really for people who compile their software themselves. People like the ability to have control over their software but going about it from the perspective of a software engineer who can write code or hack things is very exclusionary.