What's easy and not depends upon your perspective. True, almost everyone here has a disc player, but not everyone has Tidal or Apple Music. For me and lots of others with a Windows computer connected to an AVR via HDMI (I understand you don't), playing MKV or MP4 files is as easy as queuing them up in VLC Player (or Kodi, or Windows TV & Movies) and hitting "Play." Others are able to play MKV and MP4 files via their Oppos.Not easy to check it out when it's not out on disc or Apple Music.
Sometimes when I catch myself complaining about some annoyance or other, I hear the voice of my late mother-in-law, who used to utter an obscure colloquialism: "You'd kick if you were in swimming!"