The compatibility of the filler is only acceptable to fuel nozzle. It's like a locking mechanism which will unlock the opening only with the filling nozzle as a key.
However if you plan to steal fuel from the tank, you need to use just a head of the nozzle without the rear handle. After you have done that and specially got one arranged to steal fuel from Civic tanks, if the car comes with a strainer, you will next be encountered by a mesh/filter/jaali before the pipe enters the tank. For that you will have to use a hard steel wire with blades at the end to be inserted so the mesh can be punctured. After you are sure the mesh is punctured enough to insert a flexible pipe for suction of fuel then you may succeed.