Yes you are right. I like to think im better than that, but in this instance i clearly wasn't.
If i can quibble though, i think "all" can be a bit of a loaded word in this context, because people often use it to mean, all well known ones or something along those lines and not all potential ones including random stuff people make in their backyards.
Perhaps you are not one of the people running on the unexamined assumption. I still say it's clearly operative in many people.
I call it "unexamined" precisely because once pulled up the conscious level, it is obviously false. Nevertheless, pulling such things up to the conscious level is not easy and usually takes effort. Or, to put it another why, while I cringe every time I adopt this terminology, Kahneman's System 1 is pretty sloppy about such things. System 2, when presented with a problem directly, can often see quickly that System 1 is being irrational... but it first must be presented with the problem directly.