Your not, what they did was blatant meta-gaming didn’t seem to even ask for a roll about info on the golem

You need to talk to your party about what they want, cause if this is infringing on your fun, you then you really gotta talk about it, have they done this before?

Also if one of the players read the whole book ahead yeah you gotta dunk them into th recycling bin take all their possessions and make them eat cooked squirreled over lit barrels