If the creator isn’t getting paid for you to watch, then it’s theft. Doesn’t matter if it’s stealing bits, or stealing gold. It’s theft. Rationalize all you want, but if the owner of the content is having their content used against their will, then you are violating their rights.
If the code were an ATM pin code cracker, would that be any different? After all, money is just data right? Just bits stored at the bank.
Let’s also stop conflating “open source” with “right to steal.” Completely different things. If you download a pirate movie, that’s theft — it weakens the concept of open source when it gets lumped into the movement for “free” content.
It’s ironic that a lot of open source people love to talk about licenses — while desiring enforcement of those licenses while at the same time arguing that the license to use someone else’s work is fair to violate.