I'm not coming up with anything, but the first and glaring problem is that we can't store the energy created in any meaningful capacity. Sure we have some ideas like power2x but that doesn't really help for grid scale storage covering periods of several days where no power is created due to the weather. So imo the biggest problem is that it's just not a reliable source of energy. Here in Denmark we've spent billions on wind and we have nothing to show for it our energy is almost as dirty as when we started and the biggest reason for that is that we now use gas and biomass instead of coal. I could go on, but what it all comes down to is that we already have the perfect source of energy with nuclear fission, we can easily connect it to existing grids and it even works for district heating further decreasing our reliance on gas and fossil fuels.
No, we can, in multiple ways. Batteries of many different flavors, pumped hydro, storing as thermal energy (via resistive heaters or heat pump cycles), hydrogen (electrolyzers have crashed in price) and other e-fuels. Costs of these are declining rapidly as demand picks up and the scent of trillion dollar markets entices a wide range of enterprises and investors. Storage has not been much of a thing before because we were still burning fossil fuels and could just turn those up and down instead. But that doesn't mean storage wouldn't work.
In Denmark now e-fuels will be much cheaper than the fossil fuels (well, except maybe coal) you are now using. You're temporarily stuck in a rough spot right now, but the way out is via renewables + storage, and you'll be saving money doing it.
Thing is we didn't need to be stuck in a rough spot, if our electricity was clean we'd be excused for taking our time transforming the rest of our energy use.
You are claiming that e-fuel costs are declining rapidly, but you forget to mention that there's no meaningful market anywhere on earth meaning we don't really have any experience with it and don't know how much it'll cost and how it will work exactly(will it be hydrogen, ammonia etc.) it's simply not a solved problem and there's no infrastructure to support it. It might make sense in the future to use e-fuels together with wind but what we're trying to do here in Denmark is to use wind and solar for the grid which sucks. Electricity prices fluctuates wildly at the mercy of the weather gods. Thermal energy storage is also still experimental and hydro only works in very very specific locations where it's already utilized. If we where to build new hydro we would destroy even bigger ecosystems than we already have.
Edit: I'm not even necessarily arguing against wind and solar, I'm just off the opinion that it makes much more sense to build out nuclear to support the grid first giving everyone cheap and stable electricity as well as providing district heating where it's already built out.
