"Ultrasound" is really just algorithmic, more responsive Fed-style money printing, where it slows issuance when there is a high velocity of money and speeds it up when there is a low velocity of money. If enough jackasses sit on their fat asses, it will be inflationary. As soon as a critical mass decides to dump for another currency, it will slow or stop the inflation, thereby making downward ETH price action largely more reliant on the demand side of things than it was before the merge.