Bitcoin still traded and i think thats indicating bitcoin is not a buble. I think its called buble if bitcoin price become zero and no one trade bitcoin anymore. Its true that bitcoin price drop and many investor moan about this but i think its very usual in any market that the price always volatile
we could called it buble if no more investors interested in this market.but now , the fact was different.BAKKT even will launched their futures trade for bitcoin and ethereum.no more people said it as bubble again.