I do not "oppose" BEVs in that sense. It will play a role, just like wind does. But it won't be the magical solution, and realistically it will be a transitional role. It has too many downsides.
After all, an FCEV is also an EV. Why support the more resource intensive EV? Perhaps a better analogy might two different type of photovoltaic cells. They come in many different levels of efficiency, and yet it is the cheapest, not the most efficient kind, that is winning out.