Listen dude, I'm not trying to start an argument here. However, it is my understanding that the passport check is a company policy and not a TSA requirement. I say this because I used to be a gate agent servicing two airlines at one counter. Airline A required the passport to be checked, while airline B did not. I was never informed of any TSA requirements to check a passport, and I was a supervisor. As a matter of fact, for some codeshare partners a CASS check wasn't even required. You sound like you have some form of entitlement to the jumpseat. If you're jumpseating on an offline carrier, you should just be happy to have a ride, regardless of the company policy on passport checks.

I totally agree that a "what's the big deal" attitude is not a good one to take when it comes to important issues or QOL infringements, but to get so worked up just because a gate agent asks to see a passport so you can ride on their airline for free doesn't seem like a big deal to me. It's nothing against you, just my personal opinion.