I have regularly watched Disney plus and Max on my Linux systems. But not all Linux systems are equal. Watching it on something like Debian would be pretty hard. Debian generally doesn't support much in the way of DRM as it goes against most of their philosophy. You can get a browser installed with support for the widevine DRM they require. But it's a lot of work on a system like that. However under Arch or Endeavor OS it was relatively simple.