The B-52 and 747 were designed using Slide Rules and vellum drawings.
The current crop of aircraft were deigned with computers....................
I suspect that most of these issues are human error that is not being reigned in......lackadaisical maintenance habits in aviation can be like a virus spreading throughout the workplace......I’ve sent it first hand, and once it gets going drastic measures may need to be taken to bring it under control.....or REALLY bad things can happen.....way worse than what we’re already seeing.