Yes i also think that markets don't need so big price like that , bitcoin good price is 3-6k for now . 12k is to much to get moving again to 20k . We need cheap price and a lot of new money and investors to come back here to starting to buy bitcoin again .
A lot of people are already investing in to bitcoin there's no need to lower the price down if that happens people/investors would start selling their investments and all prices including altcoins would also decline it would be chaotic. We can still transact bitcoins with this kind of price you just have to get used to it.
BTW ? Why Mt Gox Needed to Dump the price ?
According to other articles that i've read the reason for selling the coins is to pay the exchange's creditors. We should be glad that the price is still in good shape after they've sold more than 30,000 bitcoins.