Patent offices aren’t full of specialist in every single area, and they don’t pretend to be. You need to meet few fairly simple requirements and patent is grant

Patent offices aren’t full of specialist in every single area, and they don’t pretend to be. You need to meet few fairly simple requirements and patent is granted. If patent is invalid the way to prove that is to challenge that in court. That system, that makes filling patents easy, is a whole reason why patent trolls exists. But it’s not a fault of patent offices, that they’re mandated to work that way.