I struggle to see how it is a problem, a free and fair society should have no qualms with people having such information. And anyone dangerous would have no problem finding it out anyways. Its not like we can scrub chemistry knowledge out from public access. Not to mention most "bomb making" knowledge is also applicable to many other fields and uses.
I find the mechanics of guns and firearms fun and interesting, that doesn't make me any more dangerous than someone who has no idea how guns work.
But what’s being discussed here isn’t blocking that information, but sadness over the fact that it’s not something you’re likely to stumble upon today inadvertently. GP is very specific in talking about coming across this info while doing normal day to day things on the internet, I.e. not looking for bomb-making instructions.
I find the mechanics of guns and firearms fun and interesting, that doesn't make me any more dangerous than someone who has no idea how guns work.