They 100% know that electrolysis methods won’t be economically viable.

I would argue against that any day. Electrolysers are viable, they are just not the current state of the industry because dirt cheap solar and wind weren’t around in previous decades.

It’s the storage that might not be viable in most countries (because only some have geology that allows for underground gas storage). Producing hydrogen from water at 95% efficiency is doable with today’s tools, if you have somewhere to put it.

Just wait for the zombie engine. :D

If it were just a straight glass tube, there would be potential uses (heat collector), but due to the curvature (cannot be stacked) and presence of mercury, nope. It’s toxic waste.