>>1457813My best guess is that iPhone used to not support VP8/VP9, because it's an open format (by Google), and Apple is against openness. (They rely in incompatibility to stay dominant.) Browsers have specific ways to handle different file types. If you open something that is not supported, they don't know what to do with it so they ask if you want to download it instead. If they now support it, that means the file is played in the browser as intended, and you have to do an extra step if you want to download it instead.
>>1457867Due to the success of the first iPhone, other smartphone companies copied most of their bad decisions, including Google with their Android OS. Phones are for emergencies like calling your mom to pick you up from school when your bullies slashed your bicycle tire. For adults they're really just for calling 9/11. Real work and entertainment are done on a desktop pc.