You're not downloading a movie to watch, you are just "acquiring training material" and "reviewing" it to make sure you can use it to train a high-quality model.
You just want to train a neural network in your head to be more knowledgeable about confronting evil empires, space flights and laser weapon, I think it is a "fair use". It's not like I planned to enjoy it.
This is/would be a fun point, but the illegality isn’t around watching the pirated media. When I torrent a copy of Terminator, the illegal act is acquiring the material, not my watching of it.
I’m not a lawyer so I’m sure there is more to this definition.
Not a lawyer but the de facto law has always appeared to only care about uploading.
Torrenting gets you in trouble because uploading at least a little bit is inherent to how it (and some other P2P) is supposed to work, and that's enough for a case.
Cases against people just downloading have always appeared to be very rare/non-existent, at least from when I used to follow the news on this stuff more. I don't think I've ever seen a case of someone threatened for solely downloading off direct download services, for example.