A war against cryptocurrencies started again
Nope. It's a war against Libra. I haven't watched all of this hearing, but I watched all of the previous ones whenever it was a month or two ago. Bitcoin came out of it well. Libra sure as shit did not. Almost everyone there was well aware of the differences and Bitcoin was something to be nurtured, if warily, and Libra was to be killed with fire.
I see no reason why anyone would sell off based on today's hearing. From what I saw it was largely 'we fucking hate you, Mark' once again.