I feel like the expectation that a developer can do it all is quite harmful. There are not many other disciplines where this is expected, and for good reason.
Maybe it's better to just admit you don't know how to properly architect a solution rather than pretend you do and create an unmaintainable mess. Maybe you shouldn't pretend you know how to do front-end development instead of creating some monstrosity that no user actually uses due to bad UX. Maybe you shouldn't pretend you understand security instead of introducing half a dozen sql injection vectors.
Maybe it's time to admit that the days of the solo developer are over. It may have worked when there was no internet, no security concerns, no concurrency requirements, etc. But we expect, and deserve, better nowadays.
I'm pretty sure non-programmers share much of the blame. Here's what I imagine goes through the minds of most people, especially management types.
"Oh, a nerd. Great we need another nerd in here because things are not moving fast enough."
I've had job offers for everything from equipment maintenance and repair (because there was a PLC hooked up) to network administrator. It's all computers, right?
When trying to use some of the truly atrocious stuff that gets rolled out with a web interface, I get the distinct impression that random "nerds" are dropped into random slots. There is no consideration that maybe saying "nerd" is like saying "doctor". If that's all you look for, you might get an economist instead of a surgeon.