This isn’t so much an argument for piracy as it is an argument to not patronize Disney. Especially considering that Disney’s motion for arbitration is so far beyond baseless that it’s baffling they’d even attempt it.
AKA: No, Disney will not be able to force you to arbitrate a dispute just because you once (or still do) subscribed to Disney+. Their motion will be denied, and pirating their content will not - in any way - afford you legal protections in the future.