Having moved up from a standard MTB with normal width and standard air pressure tires.... to a FAT TIRE E-bike with greatly reduced tire pressures. I'd be hard pressed to return to an E-bike with standard MTB width tires......The ride quality is SOOO much better on the FAT TIRE Bike. Mind you I ride almost exclusively on U.S. Forest Service 2 track roads and single track trails. So I guess maybe it depends on your choice of riding locations. If you ride strictly on paved roads or paved bike paths then the narrow tires are probably just great for less rolling resistance and better steering response.

Happy Trails
Gary
Stanley, Idaho