YOU posted this link:
https://www.informationsecuritybuzz.com/articles/torrenting-know-risks-take/
I am just restating what it says:
"However, courts have ruled that IP addresses do not constitute identities, so
the best course of action to take if one receives a settlement letter is to ignore it. The letter most likely won’t have a name on it. If the troll receives a response, it will have an identity, which gives it more leverage."
In other words,
YOU are promoting illegal activities, according to your reasoning.