Now Kumar deigns to argue rather than hurling stale abuse (Solidarity 465: bit.ly/ashok-k). Discussion is good.
The atmosphere on the ostensible left is heavily charged with heresy-hunting, trolling (which is only another name for gang mobbing and bulling), shouting-down, and drowning-out. There is little or no real political debate or dialogue.
That is what the internal life of the pseudo-Leninist sects has been for decades (the SWP, for instance, or, worse, the SP). It has now become the culture of Momentum.