It's a legit question. You made a blanket statement; you're the pro, so pony up an answer.
"It makes all metal 'better'"
"It doesn't matter what the intended use is, what the alloy is, or what the cryo process is, it just WORKS"
"MOLECULAR REALIGNMENT"
"It's great, you hand people money and parts, and they keep the money and give you your parts back, and they're BETTER"
You sound like Stockton Rush talking about using carbon fiber in a submarine because strength to bouyancy is all that matters. Cryo does stuff, I'll agree with that. Do YOU need it?
Doubtful. I've got 400k mile Neon engines that didn't see any cryo and they still run. Magnum engines all over the place over 300k miles on a stock cam, no cryo.
The claims, the smell, they reek of snake oil. Microscopic changes. Atomic rejuvenations. How does positraction on a '67 Plymouth work? I don't know, IT JUST DOES.
Midol is in aisle five. Five midol in yer crank case and that motor will last until 2090, GARONTEED. (The rest go in your oversensitive mouth).
It's not my fault if you can't think a statement through before you answer.