I think he was brilliant too, but I do think his sides were overly emotional and the crazy energy came from that. When more control was needed (lost 3/4 Euro finals, for example), they didn’t have it.
There were also the bad seasons when they couldn’t cover the same ground and fell off terribly because of it.
All managers have weaknesses, even great ones like Klopp. If Slot were to win a league title, he hasn’t done anything unique to a Liverpool manager in the PL era anymore (Benitez - CL, Houlier - multiple trophies in a season, Slot - PL), so I think there would be a little more debate on what this side have, that his side didn’t, should they cross the line comfortably.
I think that is a perfectly reasonable point of view.