I'm sure he did make mistakes. I would guess many commentaries are full of them,live stuff always is.
They are very much of their time not designed for the multiple reruns of the modern era0
Martin Brundle for example made a mess at one point in the F1 on Sunday (mixed up who was to blame in the clash of the two Ferraris).
I still preferred Moore to Davies who struck me as a bit pretentious at times. I actually preferred his non football commentaries which were often excellent