Earlier quoted context omitted.
Start testing on a mid range Android device on 3G and tell me you still believe that. On mobile it's not just the file transfer that takes time: it's the JavaScript parsing and execution (on a single core) that hurts too. iPhones are massively faster than Android (especially cheaper Androids) at this, so many developers don't realize how much performance cost there is for a growing majority of their users. Given how…
I build games where the player is supposed to play for hours. Am I wrong thinking that file size matters less for me? It adds 1% to the loading screen.
Yeah for games it's not much of an issue.
It becomes more of an issue if you are doing a "business" app, where there's a lot of moving between pages and a lot of eventual page refreshes.