Because they park on main street, eat in the motorhome, cause a 3 ferry wait for the locals..... I could go on forever or you could move to a small industrial as in not touristy town and learn why RVers are frowned on in small towns. You might be the anomaly but most tourists do not enjoy meeting the locals, they come to be with the fellow tourists with blinders on. They might stop at the grocery or liquor store but many of them leave a trail of trash in their wake. Very few understand "support the local economy, tread lightly, be ambassadors, meet the locals".
And that closes local camping spots. Last summer after cleaning up the mess "tourists" left the halfway scale.... the operators graded a pile of rocks to block passage to the beach. Most logging roads get blocked "decommissioned" every summer to block the "tourists" from them. Forestry Service Roads, FSRs on the map are public roads but every spur off that road is a private resource road built by the logging or mining company logging or mining. They have learned the easy solution is to gate it or dig a ditch across it. Another reason the locals hate tourists, you were the reason they lost access to that country too.
We just had 3 out of province snowmobilers ticketed for riding in Caribou Protected areas..... another reason locals hate tourists. And your $$$$ do nothing to support the local economy when you travel self sufficient. No one makes money on gasoline sales.
WE ALL love motorbikes tho..... 2 wheeled travellers ALWAYS dine out, shop local, and 10 bikes, 10-20 customers in the restaurants and bars, take up less parking space than a self contained expedition rig whose owners "dine at home". Bikers know how to support the local economy. They either camp in campgrounds or stay in Hotels.
The worst thing for overlanders is this self sufficiency thing. I think the worst thing for North America is the inability to converse with each other. We are becoming the polar opposite of expedition leaders or overlanders or diplomats or ambassadors or the explorers who discovered America and the rest of the world. As we close out everything we disagree with... sorry no, as we close out everything we are TOLD to disagree with.... our world becomes smaller. Expeditions, Overlanding is meant to open doors, not close them.