Oh come on, “Disney won’t stream their stuff to my niche OS” is not a reason to get their stuff without paying. You can wait for a DVD, you can scrounge a used device that will run their DRM, or you can decide you hate all DRM and boycott their stuff until the unlikely event they offer a copyable version. Lots of people work hard making this shit, and they have bills to pay, these things don’t just spring fully-formed onto a hard drive like Athena from Zeus’ skull.
Maybe there’s some morality going on if you buy a ton of merch for what you watch. Maybe.
Or you can reward the companies that do support your niche OS by paying for their stuff, that’s pretty unassailable.
I am far from without sin in this area, but I don’t try to make excuses. Watching stuff without paying its asking price is stealing.