Uh, leading up to you making things up to suit your narrative? Two people agree? Yes, opinions matter in most things, but in science, it's the facts that count.
According to Google AI, yes this film goes bad two years after manufacture. I've been doing film photography since the 1960's and never seen a film go bad like this. Also, this is my first experience with Fuji hru xray film. My gut tells me this is a weird film and likely a t-grain type of film due to its optical clarity. Most films are very diffuse, even opalescent in appearance. Holographic films are the only ones I've ever seen that are transparent like this. It also likely uses different dye sensitizers than camera films due to the need to cover the emission spectra of certain phosphors used in xray film packs, so this dye could be less stable than others.
I have 30 year old tmx that still works, although low contrast, and 30 year old tmy that still works although foggy with low contrast. Also some 40 year old fine grained positive copy stock that works perfectly today. Never seen a film die on que like this. The film still has some sensitivity but is likely about 1% of what is was when new. It may be only blue sensitive now, for example.
Also possible some manufacturing defect or engineering change occurred over the years. Maybe Fuji started buying chemicals on Amazon or other questionable source. Two year shelf life may work fine for the medical market anyway, so this is moot.
This has been my first experience using xray film, and I believe it has also been my last experience with it. If the quality was really good, my opinion would be different. The quality of this film is suitable only for contact printing, and even for that is questionable. It does create images that are interestingly distorted from reality.
I believe I paid $42 for this box of film two and a half years ago, so it was very cheap and not really much of a loss. However, when I include the work that I did trying to get it to function, the cost was much more. This film has gone up in price 60% in the last two and a half years. I am done with it.
I posted this as a warning to others to stay away.