It doesn’t.
This is the definitive measure of the effectiveness of football. You score more, you let in less, you get more points, ergo you’re better at football. Anything else is just a subjective opinion on how much you like a certain style.
Liverpool have played some of the most basic route one football in the league the last few seasons. Bang it down the middle, win a second ball, look for corners and set pieces, swing in cross after cross, look for counter attacks. It’s the polar opposite of how City play trying to play through the lines with through balls, cut backs, dominating possession, actually refusing counter attacks, short set pieces etc. Yet no one gives one how you’re playing when you’re finishing in the top 4 because your football is better than 16 others teams.
Allardyce’s anomaly of a season when we won some games when the pressure was off and somehow finished ahead of a lot of teams clumped together doesn’t prove anything. Only that we’d been RELATIVELY just as effective vis a vis 19 other teams in 17/18 as we were under Silva a year later when we also finished 8th despite them going about it different ways.
If Frank gets more points this season than last season and finishes in a higher league position that is factual improvement that you cannot explain away with hipster nonsense.