To be clear: we’re going to use renewable hydrogen for some things, such as fertilizer manufacturing — there isn’t any other way to do them sustainably. There are applications for which it’s one of the most expensive choices, such as home heating, and a whole host of industrial processes and aviation sitting in between.
Why are you expecting that hydrogen to be made into electricity? While there are silly ideas like using it in small scale applications like cars or buses, most hydrogen is used to produce things like fertilizer or steel, and while there are newly developed processes that are less reliant on hydrogen, we are unlikely to be able to scale them up drom lab sized for decades.
Being able to replace this hydrogen with stuff made from solar power rather than methane steam reformation would present a major reduction in emissions, and at the rate we are building out renewables it is far more likely that we will have the necessary renewables long before we have scaled up the alternative processes.