#1 Thanks to the internet, Async has because far more important to understand. #2 CPUs have gotten waaay faster and ram is now plentiful so there's little need for heavy optimization in most cases. #3 you're almost guaranteed to have at least 2 core available so multi-threading is a real option now. #4 monolithic code bases are the devil now #5 some 3rd gen and I think all 4th gen laungages include automatic garbage collections so memory allocation is not a concern for most people

Ok I guess none of those are huge paradigm shifts but in many ways we've gotten pretty spoiled over the past 25 years. A lot of the old struggles have been mitigated at the expense of a lot of cpu cycles. NPM is a great example of the unneeded waste that has accumulated over that time.

We went from think about every byte to just tossing everything in and letting a transpiler remove all the fluff. You can certainly make the argument that computers should do that work but I think theres a middle ground between neurotic 1995 and kitchen sink 2019 that we'll hopefully eventually find.