No one is to blame or should be. What has recently happened to Ethereum is not a bad outcome, splitting Bitcoin in the same manner should be considered a positive thing. Like dumbfbrankings just said it represents freedom, the analogy of a couple breaking up and finding separate houses is indeed a good analogy.
If you think that the split in Ethereum's chain was not a bad outcome then you are gravely mistaken. Who would want for it to split like that resulting with another chain that is now competing with your own. You also say that splitting the Bitcoin blockchain should be considered a positive thing? That is absurd. I do not know if you are serious or you are trolling.
There is more at stake here because the whole Bitcoin economy is relying on the stability of the network to keep it going. If they do a hard fork and then the network splits then they are risking destroying that economy and the value of the coin itself. I am certain a lot of people WILL look for someone to blame.