[endigma]

Ultimately engineers exist to make things, usually to make money. Any trend in the knowledge required to do so is just a reflection of what sells. This is reason why some web developers barely know any theory, they don't need it to make a thing that makes money. Same reasoning explains why a Game Developer (if the money-senders demand, customers, publishers, whatever) might need to know these things.

Just saying "kids these days" or chalking it up to education or a generational issue is silly, there's simply more software and faster computers, unless you make comically bad decisions the average paying customer isn't going to complain about a web app's performance. If you want to find someone who has this "Deep knowledge" of how computers work you needn't look further than someone who works with any sort of hardware limitation.