There is consensus documenting why you did something is good (which is what root comment is talking about). Documenting what you did is commonly thought to be a crutch for writing unreadable code.
Disclaimer: also not a lawyer, not giving legal advice.
In the soundcloud recordings he says he is residing in texas which is one a party consent state.
I can't believe this is a published article. 3/4 of the paper is essentially crackpottery (e.g. Proposition 5 proves that the composition of surjective maps is surjective), while the final 1/4 is a "proof by picture" (see Figure 6) that you'd see from a mediocre undergraduate pset.
They are providing people who do not have internet with internet. They are giving people a useful service they did not have before for free. They aren't making people use the service or pay anything for it. I don't see a negative.