If you have the right TV, the right streaming box, and the right receiver (if you use one), HDR looks fine, but a lot of TVs either don't support HDR or have a really terrible HDR implementation. And then a lot of streaming services either have bad non-HDR video streams or just take the TV claiming HDR at face value and don't give you a way to turn it off.
I don't think it's fair to expect everyone to extensively research and buy high-end TVs just so they can (literally) see a movie or show.
I don't know about the heat aspect, but third party flashlight apps are just using the camera API without showing you a viewfinder or exposing shutter controls.
Even the built-in flashlight toggles on Android are still just creating a camera session and enabling the flash.
To block third party flashlight apps, manufacturers would have to block third party camera apps too, or add in some sort of global time limit for the flash.
That instance just has a custom homepage written in React. The actual social UI is normal Mastodon with some color tweaks.
It is possible to use different frontends for Mastodon, though. Web apps like Elk can either run on a dedicated server to log into any Mastodon instance, or can be hosted by instance admins as alternative frontends.
The only one I personally know isn't Spanish is Catalan which is why I called it out. I'm being tongue-in-cheek about Iberian Spanish (or Spanishes) being the "wrong" type of Spanish vs. Latin American varieties.
I thought this was going to be about Netflix at first