Why is everyone assuming its a bot-net? Is there any proof? It could just be a that there are some people are solo mining instead of using pools. Difficulty is low enough that a single GPU could find a block every 1-3 days (rough estimate), which may be worth it to save ~1% from pool fees. Another possibility is there are some pools that haven't been made public.
I don't have proof for that, just our assumption. And I assume you don't have proofs for your assumptions either.
However, one thing we know is that there is "someone" who holds a lot of coins and made the price from 5300 sats down to 4000 sats immediately without any hesitance.
It happened twice already, that's I'm sure about. And the price is under manipulation by that "person".