What the hell were the designers at Chrysler thinking

I remember in HS auto shop in the mid 80's trying to change the rear bank of plugs on a V6 gm FWD. Struggled with it for the entire morning, only to find out it was impossible without severe diss-assembly.

That and few other things, convinced me not to pursue a career in auto mechanics, despite already being ASE certified, and top of my class.