I completely agree with this, and this is the biggest reason why it's a no for movie. 90% of the movie as we see it didn't "happen", and I'm sorry, watching a dude make up stuff on the fly from information the audience is not privy to is both a bullshit "twist" but also bad mystery storytelling. If a "twist" relies on withholding information from the audience, then it's bad storytelling.
Also (I haven't listened to the episode yet so I'm willing to stay open-minded), but this movie hasn't really contributed anything to the culture. I bet most people couldn't name anything from this movie save for the line-up scene and the "twist" at the end. Movies have had twists before this and have had twists since; nothing about cinema has changed as a result of this movie's existence, and the rest of the film is not good enough to justify the Canon.
So yeah, The Usual Suspects is a hard no. It's not even close.