Well, people are into all kinds of things. And the only true measure of how "valuable" a thing is, is how many people want it, and how much they're willing to pay for it. Beyond that, you can't really make judgments about carved plastic key buttons or anything else.
I think it's great that people get so much pleasure out of stuff like this, or any collectable stuff, even though it may baffle people who don't care about it. (Hey, most people couldn't care less about mechanical keyboards in general—and don't you feel sorry for them?)
That said, if something like this is causing people more stress than pleasure, I'm just suggesting it might be a good idea to step back from it and decide how important it really is. Cheers, A.