>The more modern style of heavier client-side js apps lets you use software development best practices to structure, reuse, and test your code in ways that are more readable and intuitive.
Sadly, this is probably where the core of the problem lies. "It makes code more readable and intuitive" is NOT the end goal. Making your job easier or more convenient is not the end goal. Making a good product for the user is! Software has got to be the only engineering discipline where people think it's acceptable to compromise the user experience for the sake of their convenience! I don't want to think to closely about data structures, I'll just use a list for everything: the users will eat the slowdown, because it makes my program easier to maintain. I want to program a server in a scripting language, it's easier for me: the users will eat the slowdown and the company budget will eat the inefficiency. And so on.
Sadly, this is probably where the core of the problem lies. "It makes code more readable and intuitive" is NOT the end goal. Making your job easier or more convenient is not the end goal. Making a good product for the user is! Software has got to be the only engineering discipline where people think it's acceptable to compromise the user experience for the sake of their convenience! I don't want to think to closely about data structures, I'll just use a list for everything: the users will eat the slowdown, because it makes my program easier to maintain. I want to program a server in a scripting language, it's easier for me: the users will eat the slowdown and the company budget will eat the inefficiency. And so on.