So all of my bikes are high end, not rusty. I don't work on cars or motorcycles or anything like that with my tools.
I use the $7 set of Harbor Freight ball end hexes and have never stripped a bolt. Actually, I've never even been close.
Not that I don't appreciate your pictures, but I wonder how much any of it has to do with bike repair. I've only ever seen stripped heads because of a standard Allen set being hamfisted onto a bike.
Worst I've come across is removing the cleats on well beaten SPD, bit I've managed.