A pretty good Lemmy client for iOS is Memmy.
That being said Christian Selig (the dev of Apollo for Reddit) is working on his Next Big Thing™. Fingers crossed for that being Apollo for Lemmy.
YouTube doesn't have invasive DRM (on normal videos), playing any resolution works on Linux.
Netflix only ever plays in 720p for me however, regardless of browser (you can check the stats with crtl + alt + shift + d). There are extensions for Firefox and Chrome to fix this issue luckily.
But if Google's DRM for the web goes through this might not be so easy anymore.
Its like Eve knew what she's doing there. She asked herself and did the first self discussion before a god decided that something like that can exist lol
I appreciate the thought that went into this decision and I think this is an example of defederating being a good idea.