It is indicative to me of a certain level of intellectual laziness on the part of the patent office. This laziness has consequences. For example, everyone who wants to go into business making something that involves quantum entanglement has to at least consider the possibility that my patent is valid and that this might be a threat to their business model.

Even if my patent is not valid, I can still use it to extort money from them simply by asserting that it is valid and that they are infringing on it. Once the patent has issued, the burden of proof is on them to show that I'm wrong and it may well be cheaper for them to buy me off than pay a lawyer to defend themselves against my lawsuit. This is what makes patent trolling profitable.