And yes, the bolts here were originally installed earlier, possibly back in 70s by the first ascensionist, although I'm not sure what the history of the present-day bolts are. I'm guessing they were added by Caldwell/Jorgeson as they were preparing the free variation of this classic aid line some years ago.
There are various ethical considerations in bolting and it gets very contentious among people who care about this sort of thing.
Suffice to say, to free climb a route like this, yes, you have to be incredibly strong, mentally and physically.