Earlier quoted context omitted.
Have you plugged in an external monitor and not had an issue? I think that's not the norm even for that setup.
What do you mean by issue? After a couple of xrandr invocations to configure them, which could be automated by some GUI app if I were so inclined, I've never seen external monitors have issues on either of my Linux laptops.
Not having issues means that you arrive at the hardware (which you may have never seen, e.g. at a customer's site), plug the wires, and it works immediately.
More importantly, not having issues means that you can rely on being able to just plug the wires and have it work, and that you don't have a risk of being unable to make it work immediately even if you forget the right invocations and are offline and can't look them up.