I don't believe that (all of) the people who get frustrated by these things don't understand that different problems require different solutions, it's when the

I don't believe that (all of) the people who get frustrated by these things don't understand that different problems require different solutions, it's when the majority of the industry (or more likely an influential minority) starts to say, "Hey! Let's build EVERYTHING this way" that that people start to complain. And I say this is warranted as it affects the job market. SPAs have their place (highly interactive applications that more closely mirror traditional desktops apps, I would say, the main one) but so many companies out there are developing their apps as SPAs that have no business being such and some of us would rather not have to deal with that (I've experienced this first hand). The other side (or one other side) of the coin, of course, is that our industry is super new and we're all still figuring it out. I always liken out industry to thinking about how long it took to standardize the hammer design we have to day. I don't have the exact stats, but I'm thinking it was probably 100s of years and our ancestors had many a fight over a big rock vs a plank with a bit small bit of steel on the end of it being the better choice.