As reactors and streamers are making diss songs, are they aware that by putting them in the court document, they can potentially be put on the Feds stand to testify? Do we also see that in the document, comments made under YT videos are also cited, which can lead to the same ordeal for fans?

Yes they are not sued but they could be used to testify. What's next? Reddit comments on this sub could be use in this lawsuit?