The problem with this assertion is: non-experts are paying for all of this.
Imagine you are an ordinary taxpayer. You are feeling the pinch yourself, you look around you and see infrastructure crumbling, every day the press says healthcare and this and that is underfunded. Now along comes some scientist, he or she wants a few billion for a new particle collider that will make no difference whatsoever to your life, and their only justification for it is "well other scientists say we should get all this money, and they're cleverer than you, shut up".
Can you see why funding something with no accountability might be considered problematic?
There's also the fact that an expert who can't explain something to a non-expert probably doesn't understand it very well themselves...