You're right, I was a bit harsh by disregarding the current use of frameworks. There're huge upsides to them. They still hide stuff, some do it well, some not so. Electric gives me the (unproven) vibe of hiding the lower layers a bit too well.

Regarding the causes of many bugs, your guess is as good as mine. You'll continue to have bugs and you'll have to continue looking under the covers to understand them.