Because, generally, we want to walk away from them in a crash and like nice comforts, two things that never happened with a Crapi, they are also much bigger cars now with a lot more power and better stopping ability, it all adds weight.............just wait until there is 500kg+ of battery onboard
As for the bonnet opener, I recall some legislation (not my specific field but, I did ask the question when Defender was launched with a plastic protrusion from part of the door card moulding to cover the bonnet release) that it must be restricted access such that you cannot easilt pop the bonnet when moving, so they tend to be on A posts with door trim in the way so they can't be access with the door closed (you can thank many a rusting Jap car for that one!)