I think this is the most likely one. If you're going to do serious terrorism, A) you probably don't need tons of bits, B) you probably take opsec seriously and

I think this is the most likely one. If you're going to do serious terrorism, A) you probably don't need tons of bits, B) you probably take opsec seriously and want a better cut-out than using a neighbor's wifi. But if you want to download movies, an open nearby wifi sounds close and convenient.