The United States has a few chip fabs that are capable of making military grade hardware. It’s helpful that the defense industry uses chips which aren’t the most advanced possible - they want the reliability mature tech provides. Micron, Texas Instruments, ON semiconductor - there are a few domestic chip companies with stateside fabs.
Intel is also a valuable collection of patents and a huge number of companies would love to get them. Someone will want to step in before the government takes over.
Ask how hydrogen would be adapted to run in propane plants. Because when hydrogen combusts, it leaves water vapor. When propane combusts, it leaves behind a gas. Water vapor will corrode and react poorly in pressurized systems.
Hydrogen requires radically different systems to combust and dispose of the waste output than propane. Those gas plant folks are lying to people.