For example, renewables right now rely heavily on quick-to-dispatch gas plants - and that's fine as a stepping stone to a carbon-free future. Though the plan fo eliminating it is still vapourware - maybe better batteries, maybe larger grids, maybe something else.
But creating a hydrogen economy that somewhat relies on fossil fuels, with a clear pathway to eliminating the fossil fuel component? Anathema!
I have nothing at all against renewables and batteries, it sounds neat but remains incomplete here and now. But until it's clear it can replace all our uses of energy, I remain baffled by people who would like to shoot down any potential different path to that same goal.
