Ibn Taymiyyah Al Harrani states:
Putting aside the fact the possibility that Ali bin Abi Talib drank alcohol before the actual prohibition, it is still rather bizarre to assume that the sanctity of the prayer was not ingrained in him enough to the point where he would approach the prayers in such a way.
Making Ali the asbab al-nuzul for this verse does seem like an incredible insult. Even worse is the idea that Ali bin Abi Talib was sloshing his words about in prayer and butchering the recitation of the Qur’an.
Aal-e-Qutub Aal-e-Syed Abdullah Shah Ghazi 