Well, there's a difference between "show me some evidence" and "lollerskates electricity! Power from the sky? What an idiot". If Hogland has proof of his city on the moon that he's willing to publicly test (say by giving the coordinates so that amateur astronomers can look for it), there's no reason that I should take Hogland seriously.
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Fair enough. I wasn't referring to Hoagland specifically, rather that if Ben Frank had gone round chattin to the authorities of the day about a kite & a key, they'd call him a nutter. & furthermore, none of the great technological leaps of note were done by sceptics, they were done by men of vision & imagination, the "hey I wonder" sort of fellows, which is diametrically opposed to the sceptic pathway of thinking. Sceptics doubt rather than explore, negate rather than accomplish, criticize rather than venture, etc etc.
City on the moon? well, nothing new about that, been kicked round for decades. Yes, evidence would be handy. Haven't heard much about Hoaglands slant on it. As mentioned before, he is a scientist, & did work for NASA, so that alone would merit taking him more seriously than say some cat in his backyard with a telescope.