Not only did these accounts not reply to this thread, they went silent and all three were inactive for days. It doesn't strengthen the evidence, but the silence of these three accounts makes us see that the evidence that has been shown does point to the truth.
When there is some evidence presented already, no one should stay silent. I would stay silent if someone accused me of something that I didn't do, and their accusation does not have any basis. If someone can present some kind of proof against me, only then will I respond to their accusation. But if the accusation start with word like, I believe, I think, then I am not going to give it a shit.
Considering there is some kind of evidence that suggest these accounts are alts and the majority of community members are expecting them to reply, they should come out if they have something to say. They are likely to get red painted soon if they do not response.