You're asking good questions then throwing in naive comments like "What's the big deal"!
How does aircraft size stop it spinning? A high T tail has its problems, but the effects of highly swept wing are very sensitive to any sideslip (yaw). You'll have seen it in the GLEX on asymmetric thrust. Stall with sideslip and one beautiful wing has less lift; the other beautiful wing is generating loads of it. Could that be another reason you have a stick pusher.
Read Sycamore's post again and look up the accidents and fatalities.
It was pilots with the "What's the big deal" frame of mind that has, rightly, triggered an interest by EASA into the different 'levels' of flight test.