Shaykhul-Islam Ibn Al-Qayyim (may Allah have mercy upon him) said:
It's never mandated upon anyone to follow the way of any man from the Ummah (other than the Prophet ﷺ), taking all of his statements and leaving off the statements of others. This is a vile innovation introduced into this Ummah. No one from the lmams of Islam have said to do this. Their level is too high, their status is too noble, and they are too knowledgeable of Allah and His Messenger to mandate the people with this (i.e. following the way of a man, taking everything he says unrestrictedly).