I'm not an expert of bitcoin but look likes very necessary to do the fork.
if you are not an expert how do you know "it is necessary to fork"?!!
Because people moving to ETH/DASH
again my question remains unanswered.
and yeah right! pan to the left on those charts to see other times people "moved to ETH/Dash" and about 100 other altcoins. here is some help:
https://coinmarketcap.com/ some of them were even worth 8.342
BTC once (1 shitcoin unit = $5941.80)