Websites are unregulated. iOS apps have to abide by Apple's terms. This is exactly why developers are mad about any number of things: paying Apple's commission, but also complying with their privacy dictates.
That's right. I couldn't stream very well from my RPi3, but I can easily play local 1080p videos. We've actually got it hooked up to an old tube TV, so I get 480p when I can.
My HP mini is to crappy to play youtube videos on its tiny poor resolution screen even playing them on the lowest resolution (which shouldn't even count) but if I download the videos and attach a huge monitor to it VLC just cruises though GB+ sized HD video files without dropping a frame. Transmission is good enough. Spend another 7 euro on a TB storage device[0] - you deserve it! More movies to watch than your health can take.
The digital prison builders are less offensive than their supporters. Remember to point and laugh when they complaint about their self-funded captivity. Its an important public service to point and laugh as they are paving the way for our imprisonment. We clearly didn't laugh hard enough in the past.