Who is trying to blame the Scottish Government for anything. The rules are quite specific and are different between England and Scotland.
This thread is clearly about Scotland, you claimed it was U.K. wide regulations, which I pointed out was wrong.
These are Scottish Wide regulations, the English regulations are here.
Staying away from home overnight
You can stay overnight in a campsite, caravan, boat, second home...
The rules are quite straightforward you can travel out with your administrative area but have to return home. Anyone taking a caravan or motor home and planning staying overnight is breaking the law.
If I was in charge, stocks for the driver and crush the motor home or caravan.