Around a million people in the US live in RVs full time. Almost all of them have generators for the times they lack shore power.
Keep in mind that right now, with gas or diesel motors, there’s winnebagos which almost reach half a million dollars new.
Many offset the downsides of the generator with solar, which is increasingly viable, but having it all in a EV especially considering fuel prices is a dream. Even then, using the generator only applies with boondocking. When i'm working full time on a project on the road, I just go to a campground or RV park with full hookups.