maybe possible using other vectors - there are a lot of hardware solutions out there that support 4K streaming apps and are not intel based. would mean possibly javing to side load or jailbreak those devices to side load... desktop/Browsers are not the only way to attack this...
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That's completely irrelevant- AS pretends to be a genuine browser and providers supply content accordingly. Even if you spend time on a different vector, what content providers provide to browsers isn't necessarily identical to what they provide to their own apps...