To me, sounds like a bunch of the examiners questions were BS. There is stuff that you have to know, and there is stuff that you should look up versus relying on your memory.
As an example, think of the various MEL situations we have all encountered, that is something I take the time to look up in the manual even if I've had that exact same MEL item in the recent past.

What the F stands for-give me a FB? Exact hours of rest in a given situation, that's why they write the rules down for me to take 10 minutes out of my legal rest period and look it up. How low can you go-that one you've got to know. 50' could maybe, maybe, be a min for a Cat III (Cat I Red Terminating bars should be able to continue down and land provided the rwy environment remains in sight)

Still, have to bust you on the whole judgement thing.
Here's a guy who hooks you on the Oral scheduled to give you a sim first thing in the morning, might be a two day food poisoning for me if I'd been in that situation. Absolutely no way I would subject myself to an examiner who's judgment is questionable.
Definitely no way I would put myself in that situation with no sleep. Wouldn't hop in the jet fatigued, why would I do it in the sim.

Absolutely no way of knowing how ALPA would have changed the environment, so as Joey would say, that point is Mooo.
One of the bros did bust his oral in a similar situation (w/ ALPA as the union), right seat jurassic jet to Capt of a glass cockpit....and in his case, the result was a couple of days off followed by a do-over of the Oral. And his examiner was asking some off the wall questions as well....so, the examiner also wound up with some additional training and attitude adjustment.