Someone needs to get a sense of proportion. It wasn't that long ago that the FunBus was carrying royalty around the world....
So it doesn't meet current EASA passenger carrying requirements. But don't forget those assume a 2 person flight deck, whereas the FunBus still carries a couple of cushion-dampeners on the flight deck. The navigator, in terminal areas, effectively becomes a food-powered GPWS, for instance.
One concern I always had was at the woeful weather radar. That really isn't good enough for the 21st century; many of us experienced lightning strikes with no threats showing on the weather radar, for example.
The huggy-fluffies would probably take a dim view of the passengers sharing the same compartment as palletised freight, but for heaven's sake, flying passengers in a C-130 is infinitely more hazardous than in the VC10.