Not so. Car camping is becoming quite popular amongst campers and You Tubers. I follow loads of car campers, None are homeless or on the bones of their arses
Im not saying that homeless people don’t car camp. Some do obviously.
OP I car camp. I absolutely love it. I don’t have the biggest car on the world and there’s only me but I’ve got a SIM mattress, a toilet, a high wattage lower bank that powers my kettle and a stove (that I don’t use in the car) and some storage boxes. Great for a night or two. I’ve stayed outside my daughters house in Scotland many times,
some campsites will allow car campers, but best to check in advance.
I love the freedom of only spending a night here or there in some remote and beautiful places but I’m careful. I don’t stay in places that ban overnight camping, I arrive late and leave early, take all my rubbish with me and never use the countryside as a toilet.
i also try to put back into the local economy if I don’t pay for a campsite, by either eating out, local sightseeing,etc
I have a VW Caddy SWB but I’ve also been known to use my old VW estate Golf from time to time
you won’t get any reasonable answers on here, you are best if maybe posting on the camping board. Have a look at YouTubetoo.