Yea, genius and madness tend to go hand in hand - same traits cause both. There's been research into it, and if i recall right they pretty much concluded it's almost like flip sides of a coin.
History shows us as well, many geniuses of our past were... A bit out of their mind, but because of that they are also geniuses -> they think about things no one else would, they see those things differently and approach differently.
I believe part of the reason genius minds go a bit mad, or some genius persons seems very obnoxious is because everyone else seems to stupid, and it gets so insanely frustfrating when people cannot understand what seems basic logic from the POV of the genius, and you have to deal with it every single F* day, but from the POV of the genius there is just so many morons.
Bottomline is - if they are a bit out of their mind, or seemingly completely bonkers - we should be glad and thankfull, because that is the person who is likely to come to a solution to a very hard problem concerning few or many, pushing our civilization forwards.
Also because people fight against them calling "bullshit" at their "crazy inventions", they have to proof beyond shadow of doubt this is better, while it sucks for the genius it is better for civilization as a whole