The primary reason to cold store or freeze film is to extend it's expiration date. If the storage has been continuous, I have repeatedly shot Color and particularly B/W films up to 15 years past expiry. The problem with color film that gets stored in the cupboard is that it gets color shift the further you go past the expiry date. Color shift does not happen on black/white film so it endures crappy closet or shelf storage out side cold storage much better than color.
But to be purposefully redundant, if you cold or freeze store either color or BW film AND keep humidity away from it, you may be able to get the same originally intended IQ for many years past the expiration date.
Frankly, except for 35mm, I don't think I have purchased any medium format or large format film that was not expired for a number of years.
I buy all my film except for 35mm on eBay as long as the seller states cold stored, seems to sell a lot of film and has mega amounts of positive feedback. My minimum feedback is that I do not buy anything from anyone on eBay unless their feedback exceeds 97.5% positive.
Have not been burned on this yet, and am happy with the results from the film. The last time I saw color shift on any color film, it was 110 cassettes, likely stored badly and 20 years old, or more. I got 100 cassettes with a camera I bought. Did shoot and process about ten rolls. One had bad color shift.
Now if someone leaves film in a car glove compartment, or on the package tray of a car and parks in the hot sun for three days, I'll show you color shift, even if the film is 3 years prior to expiration..... It's hot or humid storage that creates the problem.
So, I repeat, one cold stores or freezes film to delay or completely forestall the effects of expiration.
When I want color shift, I bake my film in an oven set at 250 to 275, for six hours, even if I just got it from Fujifilm or whoever. That's a guaranteed recipe for color shift and other anomalous processing behavior.
Another thing to note is that, (I have been told), film is chemically active and developing from the time it is rolled or packaged at the factory. Heat accelerates the minimal development that is taking place, while cold storing or freezing reduces/stops the chemical activity taking place.
So again, if you want weird.. bake it.