Well, I am part of that community and although it is the majority sentiment it is not something that is shared by everyone.
When I criticize the left I am criticizing from within that group. If you read my comment again you will find it is the replies from others who frame things as a left-right binary. By being of the left and being critical of the left and having a dissenting opinion I am negating that binary.
I think this decision is poorly thought out and authoritarian and I do not like that in our communities.
It is my sentiment, feeling and experience of an increasing demand for ideological conformity, politics of vanity and authoritarian behaviour on the left.
I could do some research for you and provide examples to backup this belief.
Or rather, let us be reasonable. When I critic the left for authoritarianism do you find it to be heedless agitation? When I speak of narcissism and self-aggrandizing behaviour do you yourself see no such evidence of this?