I don't think all of the mined coins are dumped. Some people even hold on to them .
Miners have to pay electricity, and it is risky to hold btc in a bear market. The bull market could start in few weeks, but who can afford to wait?
strong hands can wait ,peasants will be pushed out
you decide now which side you want to be on
panic sell like a pussy or grow some balls and ride out the storm
its up to you ......