Earlier quoted context omitted.
They quite frankly can't technically, only legally - they're selling a 0 margin good, anyone who has it can basically give away infinite copies at zero cost per additional copy. Anyone who wants it for free will have it for free. They need no more than drop a few words into Google or type the name of something into a fully automatic tool like Sonarr. It's pointless for them to bother trying to stop piracy, especially…
"but it's not perfect, someone could just xyz and abc and get around the system." DRM is not about being perfect against a dedicated pirate. Just like locks on doors, it's about putting up a few barriers that serve to keep the vast majority of people honest. No one is under any illusions that DRM will stop movies and games from showing up on torrent trackers.
It doesn't "keep honest people honest" when piracy is so damn easy regardless of what they do with DRM. The point of that phrase is to increase the effort and motivation necessary to commit a crime - in this case, DRM doesn't do that. With or without DRM any idiot can download the latest Popcorn Time fork and stream movies with 1 click. DRM doesn't hinder the most casual of pirates at all, it only hinders honest customers.