Are Miners Behind ETH's Price Volatility?

Miners have moved the market before and its not hard to reason they could do it again, given that their multi-billion business is about to be deprecated when ETH moves to POS. Reports of anomalous activity, especially on the Ropsten Testnet have been reported. Ethereum Dev-Ops is handling the situation now, but will it be a smooth transition to ETH POS or are we in for Mr. Toad's Wild Ride... https://www.bitcoinisle.com/2022/05/29/ropsten-ttd-postmortem/