So what is the fault path, even if you touched the hot? (Assuming you were not touching the ground/neutral). You are sitting in the dirt, the generator is up in the air.
There is no fault path touching any single conductor.
That same theory is at work in ungrounded delta that you might see in a critical application.
You also see it in the little plastic box generators like the 2kw Honda. They may not bond the neutral and they get away with it because the generator is insulated. The ground at that point is antenna. OSHA says you have to put the bonding strap back.
Any metal frame generator like you see on the job site is assumed to be potentially grounded by incidental contact so they do bond the neutral.
If you connect to a ground electrode, you are an SDS.
Rubber tire generators are like that Honda but 250.34 still says they bond the neutral.
Bonding the neutral really only causes the breaker to trip but if the generator is truly isolated a phase to tool handle short is not going to kill you. Just don't cut the ground pin off and use it on a grounded system,
