Couldn't such absolute statements actually be your own "rationalization" and prejudice? How can you be sure it was others who messed it up, not you, if you keep thinking this way everywhere? Very probably you indeed have some aspects to improve, but you just convinced yourself that "no, I'm perfectly capable, but that interviewer sucked and judged me arbitrarily. That was his fault, not mine." Thus you look at the world through hostile, cynical eyes and miss up on the opportunity to improve yourself. Isn't that even more harmful and irrational thinking, which you seem to be up against?

In short, possessing such a mentality is dangerous and likely to keep your mind shut.

I don't doubt that you might happen upon some pathetically incompetent interviewers. But if you treat every "no" response in this same manner it's awful.