With central government cutting off FAME subsidy, and now state looking to impose taxes, i really don't think the government wants to actually increase electric adoption.
They got way too greedy way too soon.
Good to know our environment is going to be perpetually fucked.
I believe states have a great incentive to prevent EV adoption. After GST, the easiest way to make revenue for states has been fuel taxes. If all two wheelers go electric, it might represent atleast 40% drop in consumption of petrol and hence corresponding decrease in tax revenues. However I am not sure why the center would stop the subsidy. They could have kept it for a couple of more years and once the local battery eco system is well established, they could have gradually withdrawn it. Oil imports are huge drain on forex and moving to EV allows more flexibility in dealing crude's volatility. Not to mention the air quality improvements due to EV. That alone should be enough to promote EV heavily in urban areas at least.