How can people run their generators without a qualified generator technician like me?

Necessity + Cost compels any body to Hire somebody for a Job.

So if there a necessity & budget availble, people shall certianly hire staff for their generator.

it depends on which kind and size of generator we are talking.

for small generators, and with intitial training, "normal" people can handle the basic operating tasks for gensets.

bigger and complex units needs talented peole to operate

first the experiance person are run to the generator and other per son gain the skill to tis instrument