For better or worse, I do a fair amount of these. The AHJ requires an engineer design and "sign off" post construction.
It is basically showing helical piers every 5-6 ft with the footing notched out for the bracket. For sign-off, we use photos and the boring log showing install pressures that...
Fair enough although I don't think I ever said there was a problem with the floor. I usually set a hard limit of L/240 total load & 360 LL - mainly to try to get something existing to work but never anything close to that in new designs.
I agree. I don't like them in crawlspaces (or in general). Most crawlspaces around here are encapsulated these days so moisture is typically not an issue.
I would assume many in Camp 1 likely use expensive software to do complete designs so the computer does the code crunching. I'm in Camp 2 and am here to make money and my projects don't require anything like that - so the simpler the better. Also, in light framed construction, serviceability...