I’d hazard a guess and say it all stems from advancements in tech. There was a need to get the most out of something because of limited resources. Now that everyone’s got some fairly serious hardware (yes, even the cheap shit), there’s rarely that urge to optimize.

Rather than optimize each new technology as it comes along and gets adopted, it seems as though the mantra is “fuck it, add it to the pile”. And it snowballs. As developers feel the need to optimize less, the lessons get passed down to the next generation, and so on.

So we’re left with apps/end-user stuff that appear to have been on the opposite of a diet.