If we aren't using combined cycle gas turbines round-trip efficiency of hydrogen storage is seriously reduced.
I'm not moving any goalpost. This is your comment when you claimed that gas turbines could be repurposed to burn hydrogen: https://news.ycombinator.com/item?id=26599162
> Those gas turbines you're referring to can simply be modified natural gas gas turbines.
> It's past time to admit you were wrong.
Follow your own advice. You can't just feed a gas turbine hydrogen and run it as normal. Existing gas turbine manufacturers don't plant to offer 100% hydrogen gas turbines for decades.