No, I get the parking space thing. People have no right to those unless they have a legitimate placard (but don't get me started on the fact that CA law mandates so many of those spaces that you legitimately see half a dozen or [more frequently] MORE sitting unused at even the busiest times). But the door issue doesn't seem similar to me--especially where there is only ONE door, and it is a power door like that so the only choice is to hit the button or open it manually. I know they aren't ALL like this, but the exit door from the secured area in my building is one of those. And that particular door is EXTREMELY hard to open without hitting the button. I'm not a small dude, and I have to put my weight into it to get it to move, and even then, it opens VERY slowly because of the resistance. On the flipside, if you hit the button, it just opens right up, no problem. So as a result, people almost always use the button. Again, I realize that not all of them are like that. But for whatever reason, the mechanism on this door makes it take longer and take WAY more physical exertion to open it without using the button. And it is the ONLY exit door from the secured area. So I've never even thought twice about using the button on that one.
That said, I do generally get the idea of "this isn't meant for you, so don't use it." I guess I would apply that to situations where, for instance, there is more than one door, and one of them is the disabled-access power door. Unless there is a reason to use that door in that specific situation, I wouldn't even use it and would use one of the regular doors for that same reason--that power door is meant for a specific use, which isn't mine. But if I did need to use it, I wasn't aware that using the button was an issue, especially for doors that have issues like what I mention above.