Considering that it would be a radiologically dirty explosion, I can see why.
Still, in all fairness, I really would seek to obtain hidden secrets if plunked in a df generated world. I am a connesouir of information, and if it works, I don't discriminate.
(I have studies a vast number of "magical" texts purely for the novelty, and for an insight into the magical thinking mindset of such school's practitioners.... it was... enlightening. Magic is very fascinating stuff. Pure bunkum, but fascinating. If it actually DID stuff, rest assured I would add as many new hobbies as were necessary to gain "adequate" in the skill. I'm a born polymath at heart, and gravitate to anything I don't already know, including silliness.)
Summoning michael jackson and dancing zombies to confront the HFS really is something I would probably try at some point, if the opportunity to learn how presented itself. The game features necromancy, so I can garantee I would be jonesing for a copy of some slabs.
I would be willing to trade "secrets" I already posess, because knowledge is a currency that only grows. You don't suddenly forget something just because you told somebody else. Luc bakecakes wants the secret to delicious, never-fail puff pastries? She can have it, but I want a rubbing of her magic slab that says how to raise the dead in exchange. I'll even teach her how to make marshmallow divinity to sweeten the deal. We can have a cooking party to swap recipies until she's happy with the trade.
Same goes for any other magical practitioner. I'd end up with quite a collection after awhile I think.