Ethereum and Bitcoin are going up, but why?

Coinbase is currently seeing an uptick currently in sales to fiat & the price of altcoins are generally nosediving, as a result the price of Ethereum is going up quite a lot today even more so than Bitcoin.

But where is the Demand for FIAT coming from? Very recently Tether (USDT) has released information that they are no longer being audited by Friedman LLC, meaning that once again people are increasingly skeptical of the legitimacy of Tether as a place to "Cash out" during Cryptocurrency market dips & falls. This explains why people might have to move to FIAT currency as opposed to USDT since they're no longer as trusting of the latter.

But why is Ethereum going up more than Bitcoin

As rumours spread about about the legitimacy of Tether people fear that they need to leave the market and get out as soon as they can. Which coin provides a faster method of travel from Crypto to Fiat? Ethereum.

TLDR

People are getting rid of Tether due to issues surrounding its legitimacy after losing its independent auditor Friedman LLC and such they need to change the way they cash out. Etheruem/Bitcoin are being sold on Coinbase to Fiat as a replacement for what they usually do (CRYPTO/USDT).