the irrationality of polytheism

ثُمَّ نُكِسُوا۟ عَلَىٰ رُءُوسِهِمْ لَقَدْ عَلِمْتَ مَا هَـٰٓؤُلَآءِ يَنطِقُونَ

Then they reversed themselves, [saying], "You have already known that these do not speak!"

وَلَئِن سَأَلْتَهُم مَّنْ خَلَقَهُمْ لَيَقُولُنَّ ٱللَّهُ ۖ فَأَنَّىٰ يُؤْفَكُونَ

And if you asked them who created them, they would surely say, "Allāh." So how are they deluded?