Totally agree with your 5 reasons:
1. You Can Focus On Simplicity
2. People Matter More
3. Keeping Things Personal Is Easier
4. Small Doesn’t Mean Poor
5. You Don’t Have To Stay Small Forever
Not because you start with a nice Burger Truck, you can’t scale that into a Uber+Burger+Truck+Salad+Bar or something more traditional like McBurger Truck.