I think most of the Brent bashing comes from him being a hypocritical, spineless, philosofeeee abandoning, teeth whitening, wife cheating, mid life crisis-ing, mong who spouts utter tripe and talks in riddles. (It does from me anyway).
He's an average manager and nothing else. He will do ok with Liverpool, but nothing spectacular or come even close to last season again. The only way they will match last season, is by finding the "next Suarez". Players of the highest calibre currently won't join, and Brents scouting judgement is very questionable.