I don’t think Ford caught other truck manufacturers at all off footed by the mere fact of having an AC inverter on their F-150 pickup. These have been available as an option or standard equipment for a number of years by most of not all pickup and car manufacturers. It think the convention to setting inverter size has been to be able to run 1 power tool or 1 coffee pot kind of duty.
What is different it appears is that Ford has stepped up to a larger output inverter rated for continuous duty and engine management tweaks to facilitate long duration motor idling.
Yeh, I have an AC outlet in the cab of my 2015 silverado. But, as you mentioned it’s only good for lightweight stuff, cell phone, etc. Ford is operating a 7.2K watt option. That’s a game changer as something useful.