It's not like power lines all over the world have massive capacity reserves left. And with heat pumps becoming highly relevant right now for heating homes, there's going to be a lot of additional load on the grid.
Yes, EVs and heat pumps do also offer very useful application as flexible load to consume when supply is high and be switched off when electricity supply is low. But all this combined will make electric grids even more essential for keeping everyday life running.
H2 on the other hand with its inherent buffering effects would take some of these pressures off the electrical grid.
On the other hand, in Poland at least, natural gas charging stations managed to get enough traction - every gas station ofers LPG here.
There are extreme temperature vehicles that can handle below -40º with tank heaters and other things, but my gasoline cars started just fine at -40º and they weren't even garaged.