"Has he (not) turned all the gods into a single God?" (Sad 38:5)

Well...!? Is their hunch right? What do you think?

Sad 38:4-7 - They (the pagans) wonder that a warner has come to them from among themselves. And the disbelievers say, “This is a magician, a sheer liar. (4) Has he (not) turned all the gods into a single God? It is a very strange thing indeed.” (5) And the leaders among them walked out saying (to their followers), “Walk away (from the Prophet,) and stay firm on (adhering to) your gods. This (call of the Prophet) is surely something designed (for his personal benefit). (6) We never heard of it in the classical faith (of ours). This is nothing but a false invention.