It's too expensive. It's too inefficient. It's not powerful. It takes away resources that would be better utilized on batteries wind and solar.

These arguments display both a lack of imagination and understanding to me. Let's go over the arguments:

Switching to green hydrogen will over-strain the electric grid because of all those electrolyzers Green hydrogen is produced from surplus renewable, more often than not even ON the grid. In fact it has the greatest potential to unlock the 24 7 ocean power so you don't need to run cables to the shoreline. Not necessary to be ON the grid.

Electrolyzers are too expensive they use platinum. Lithium batteries are not cheap either. Nobody's using solid platinum anymore. Materials science continually advances and cuts costs. Why do you think I'm working on turning bricks into electrodes😼

Electrolyzers need a compressor to operate efficiently. Bubbles form on the electrodes. If the electrolyzer is sealed it will self-pressurize.

Electrolyzers are only 50% efficient just not true anymore. Current commercial efficiencies are 80% to 95%.

You need huge air pumps and filters to run your fuel cells Explain that to the Doosan DS30 a mass produced hydrogen powered drone with a 2 hour flight time. Good sized tank, 8 propellers, fuel cells, not much else

http://www.doosanmobility.com/en/products/drone-ds30/

Fuel cells don't work below 50C so you need a huge battery and heater. Maybe in some obsolete design. The Chinese HyDrone 1550 was used to rescue 3 people during a mission on Changbai Mountain in 2017. Literally translated as “The Perpetually White Mountain,” the rugged terrain and -22F temperatures make battery powered drones unusable in the region.

The tank has to vent or it might explode in hot temperatures You mean like the grid storage battery that caught fire and exploded in Arizona..in the town of Surprise😳

https://www.insurancejournal.com/news/national/2020/01/29/556855.htm

Thermal runaway. The flammable electrolyte inside the cell suddenly heats up and causes the same thing to happen in adjacent cells. Once ignited, the batteries can emit toxic fumes.

Firefighters are learning on the fly how to respond. Dousing the flames takes a large amount of water, and cells can re-ignite hours after the initial fire has been extinguished

Hydrogen is used as a coolant for electric generators, starting in 1937. Follow safety protocol it's Fine👮

https://en.wikipedia.org/wiki/Hydrogen-cooled_turbo_generator

The tank has to be made from the strongest material known to man and has to withstand 10,000 psi

Universal Hydrogen does not use a composite over-wrapped pressure vessel, instead they use a layered approach. Smart. And FAA certifiable. No graphene, boron nitride, diamond, no super exotic materials. 700 bar or 10,000 psi sounds like a lot but I work right next to 5,000 psi nitrogen and helium tanks all day long. We also have flammable and toxic gas tanks, 5,000 psi in ordinary metal cabinets with ventilation and alarms. Perfectly safe.

You need hydrogen buildup detectors outside the tank and they have to be inspected every 6 months

like I said, we have similar where I work. Not a big deal. Although since hydrogen is a lifting gas the alarm sensors should be located at the highest point available not just anywhere and you don't need to install more than a handful.

Hydrogen will make everything brittle and crack ok so hydrogen embrittlement occurs when you have atomic or ionic hydrogen, not normal H2. Let's chalk this up to ignorance😒

Hydrogen fuel nozzles get stuck. Some of the older ones true. That's why we have continual improvement.

Batteries are 3x more efficient than hydrogen So, this is based on fuel cell efficiency of 35% compared to battery efficiency of 90%. And this is why hydrogen turbines which can reach 90% efficiencies are being installed. More, better, coming.

Hydrogen needs special storage infrastructure and pipelines which will be too expensive Universal Hydrogen capsules fit into the existing multimodal containers for sea, road, or rail transport and are loaded or unloaded by forklift. Utilities are enriching existing natural gas pipelines with hydrogen no problem. 

Hydrogen is a net energy loss Or virtually a loss These arguments typically list the energy cost of electrolysis, compression, storage, transportation etc. Using the same logic nobody should have ever bothered drilling for oil. Because it costs energy to explore, drill, extract, store, transport, refine, and transport again.

Hydrogen doesn't work as well as batteries for grid scale storage umm ... no. 

"You’d need roughly 40 GW worth of lithium-ion batteries to have the same amount of storage potential in just one of our caverns." Mike Ducker, Vice President of Renewable Fuels, Mitsubishi Power. They've got about 100 caverns.