This is not nearly accurate. NDTV "and others"(not sure of any other mainstream channels) have also hsitorically been hard on the UPA governments even if you consider them pro-Congress.
The current breed of mainstream channels (Zee, Republic, India) who hold most of the eyeballs in India are not just pro-government they blatantly lie to protect the government's incompetence. Added to the fact teh BJP is a top advertiser on TV media creates a dangerous incestuous relationship the scale of which we've not ever seen before.