it's not the rarity its the absurdity. Fleet boats are US science and history. Ours rust into oblivion with incorrect parts and fake this and that. The U-boat is completely restored with new parts the Germans donated. It will be encased and preserved and ours will be barnacle or rust encrusted. That's just wrong. They could have put a fleet boat in there.
It is the large number of fleetboats that makes them less valuable. Something that is everybody's responsibility is no one's responsibility. There's one U-505 in one museum and if that one isn't preserved, it's gone. CLAMAGORE is scrapped? No problemmo - plenty more subs like that.
Yes, that's the attitude. I don't agree with it, but it's a natural response.
I live in hope that the sub force museum in Groton will get CUTLASS back from Taiwan.