The question isn't how many times you stop, it's driving 3.5-4 hours then needing to plug your car into a wall and wait many hours for it to be ready to drive again. It's so inconvenient to not be useful in road-tripping.
I have seen some fast charge stations in the UK, on motorway service stations where people usually stop for about an hour,these offer an 80% fast charge in 30 mins.