If getting wisdom from others is not your thing, I can respect that, but low-key insulting them for leaving you pointers for a more enlightened place is rude.
You can instead say "I don't understand why Al-Ghazali relates to this", and that would be completely OK.
Lastly, it's fine to quote someone but you need to explain how it's relevant to the conversation. The author could have summarised al-Ghazali's idea about free will or whatever and it would have been fine. But he didn't even bother, as if the ideas so basic and well known that it's not even worth doing.
I'm pretty comfortable with the way I've poked fun at the author's pompousness. If you need further explanation it's because you haven't read Chanakya yet.
I don't think that you're pompous because you cited somebody I don't know that existed. I'm not a god. People show me things I don't know, I take note of them.
Maybe I won't agree with the direction you show me, but at least I have a new direction to discover.
This is the difference.