In fairness, the 757 was designed when Boeing was still engineering focused and is one of the best commercial aircraft ever produced. This airframe, N672DL, is 32 years old, so it was almost certainly an issue with Delta’s maintenance. It was also quickly repaired and returned to service the next day.
All kidding aside, the passenger experience is a lot better anyway. Overhead storage bins on the newer airbus planes is a hell of a lot better, not to mention the infotainment systems that airlines seem to opt for. The way they integrate and function vs the Boeing dreamliners is a pretty stark contrast.
I dunno, the 777ER is a great long distance plane, but the A320 is also a good experience. I really think Boeing fucked up with keeping that old workhorse the 737 around at the behest of pilots and customers. Especially since the 777 is (knocking on wood) as safe as it gets, no hull losses from internal factors as of today.
Boeing's mismanagement is not just a 737 problem: It's a USA problem, they are the ones that make our jets, missiles, and manage our first strike capacity. These are things that much like our planes, cannot fail. EVER.