Someone has been trying to take down Snort Burnell's channel for at least the past eight months. That's why she was uploading videos to a backup channel until that channel also got strikes against it. I suspect she's prepared to re-upload her content if Phil and/or his cronies have their way.
The most recent example I'm aware of an attack against Snort's channel happened in early February: One of the videos on the second sponsorship (I think it was called "the new sponsorship") was temporarily taken down due to bullying and harassment.
Now, the dates on the DMs are from late January to early February. But is that of this year? If that's the case, then it would be reasonable to say Phil himself reported Snort's channel or encouraged his fans to do so. It could even be argued they had a modicum of success in doing so because of the sponsorship video being taken down.
I use the plural "fans" for a reason, and that's what makes these DMs so interesting: It's very likely that Neger's anonymous source wasn't the only person Phil asked to check out these videos for possible slander.