Or they could just use the well known https://en.m.wikipedia.org/wiki/Fischer–Tropsch_process to convert it the rest of the way to a hydrocarbon, not have the pesky raw hydrogen issues, and be able to use all their existing infrastructure to burn it? With the advantage of pulling carbon from the air in the process?

This is a technical requirement often overlooked by the Consumer Market compared to the Commercial Market - the heavy and long usage of equipment in remote places (generators that run for days or shipping across oceans).

Hydrogen may be a solution along with other hybrid approaches (WA state ferry electrification being relevant [1])

[1] https://wsdot.wa.gov/construction-planning/major-projects/fe...

Not really, because if you don't have access to electricity then you very likely don't have access to hydrogen either. Hydrogen is much more difficult to transport and store compared to natural gas, gasoline, diesel, etc.

Getting electricity out of hydrogen works the same way as getting electricity out of all the sources you mentioned, except your generator now produces zero emissions.

JCB are heavily in to hydrogen. They’ve shown how they can convert existing diesel equipment, and setup fuel bowsers on work sites.