Comparing UPT to a CFI check is ridiculous. My CFI check ride (before I went to UPT) was harder than any checkride I've ever done, military or civilian. 8 hour oral and a flight with a gruff old dude that made the biggest hammer at Sheppard seem like a santa. Pilot training was tougher, but only because it was a year long event with ridiculously high standards, whereas a CFI ride was a single event. I'd have taken any of the 10 checkrides at Sheppard over my CFI check any day of the week and twice on Sunday.
I do agree with Drum on the sign. Nothing wrong with the sign, every company with pilots should have a similar sign hanging over the entrances to their ops. It's not so much arrogance as it is attempting to push a mindset of professionalism and excellence.