Widevine is a proprietary digital rights management (DRM) technology from Google used to decrypt video from the likes of Netflix, Hulu, Amazon Prime, ect. It provides a Content Decryption Module (CDM) as a client that’s used by software like Chromifox to display encrypted content.
As of recently Raspberry Pi officially added support for Widevine which fills in an already pretty well rounded desktop experience.
Might be controversial to some but I see that as good news. I use my Pi4 for Kodi but installed Ubuntu Mate on another card and the desktop experience is quite good.
When I’ll have the time I’ll look into dual and USB booting