An electric cargo van belongs to both categories: it is a commercial electric vehicle and a cargo van. The useful decision is whether to replace a gasoline or diesel cargo van with a battery-electric vehicle that can perform the same work. Electric propulsion does not remove the need for the right cargo body, loading access, or carrying allowance.
A battery-electric option makes sense when the completed vehicle can handle the load and route, charging fits the working schedule, and service support is ready. If one of those conditions is unresolved, a suitable conventional van may remain the practical choice for that assignment while other routes move to electric power.