Ok dominance is overdoing it, but they've spent less than Chelsea, Spurs, Arsenal and Man United and won about the same as the lot of them combined in that time. So they've done better than most teams who've spent more, with Man City being the sole exception.
Of course "they spent money as well", it's the premier league, but it's just arguing that black is white to deny that Klopp has done very well there for the money they've spent.