Because fracking and fossil fuel usage is a fake bogeyman people use to pretend they don’t understand the real problem of overpopulation. From 1950 to today the world population rose from 1.2B to 7B+ and steady climbing. That’s 7B+ people that need 7B+ worth of resources.
Because doing so would give the opponent a highly effective talking point (jobs) for years to come. Best to lay down some regulations, announce a plan to train workers for future energy plans in the near term and keep moving in that direction.
I’ve been told not to go anywhere for a year because of science but the same people don’t care about fracking. We live in a reactive society that pretends to be proactive.