>It's a mixture of incompetence, laziness, and poor management.

Don't forget the constant, unrelenting pressure to keep up with trends or you'll get summarily banned from ever having a developer job again. SPAs got trendy, so naturally everyone had to jump in on it when normal MVC applications work perfectly fine. There's a bit of hyperbole in my previous sentences, but please don't write off the endless articles and forum posts telling people to keep up with X technology because it does influence people.

Like seriously, we're constantly prodding devs into technologies they don't want to get comfortable with, then we're suddenly surprised at the lack of competence.