Narrow shoulders and people on phones make me choose not to tow anything by bike.
This is one of the primary reasons I felt my longtail had to have full suspension, so I could ride off into the gravel at 30 mph and not shit my pants.
I carry plenty of camp comforts on the longtail. A good tent, with practice, sets up in just 5 min. But, I do plan to tour when and where the weather won't be biblical. I might get rain soaked, but I won't be going camping if the temps will be below 20F at night. Camping as much as possible at RV type campsites to have a plug, means you can always hunker down for a few hours in the restrooms and showers.
But I keep looking at building a mini camper to tow behind my Subaru. But then I come to my senses, the Subaru makes a great mini camper by itself. But I'd do it if I had a shorter car.
But for other purposes than long distance touring, I love the camper bike/trike idea. How perfect for living rough at Mission Bay San Diego for example. Not traveling miles a day, just able to roll your house from 12 to 2 am as the cops require there. No traffic then. Circle the bay real slow twice, park again and go back to sleep. Next morning, wake up and go windsurfing.