This just replaces a free-standing generator strapped down in the back of the truck. Those tend to be noisy but they're relatively cheap. I doubt most jobsites care that much about the noise, but I suppose tailgaters might like it. On the other hand, tailgaters tend to prefer inverter generators which are very quiet and use very little gas.

In fact, thinking more about it, I wouldn't want to be at a tailgate with an F150 running all day spewing exhaust all over. A small portable generator and an extension cord can be located relatively far away from the gathering - that's a lot harder to do with the truck itself.