Being baptised is a bit like having a tap put in your bath room. A tap is rather essential furniture. Putting a tap in makes it a bath room. But you still have to turn it on. Imagine a bath room which stayed there for 80 years before being knocked down, and during that time not one of the taps was ever turned on in sink shower or bath. Could you really call that a bath room? It is a moot point. In the same way - imagine someone who is baptised, and yet the tap of the Holy Spirit is never turned on. Can you really call them a Christian? It is a moot point.