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
Since everyone is calling for a fork so each and every individual is calling for a fork without knowing what it is ,that is what happened here.

People are not moving to ETH and Dash because of bitcoin,people are investing in alt coins for a very long time and now these alts had a great push ,regarding the fork the core has to increase the block size to 2 mb to tackle the recent issue and then look for a better alternative at a later time and i do thing that is the best option in order to avoid any split.