Fair point, but it's a classic "apples vs oranges" debate we often get in football.....
Paisley's Liverpool were excellent for their time — disciplined, hard-working, great passers, strong in transitions, and very effective in European competition. They played a smart, functional style built on Bill Shankly's foundations. Players like Dalglish, Souness, Hansen, and Rush were world-class. But it was a different game: fewer foreign players, different fitness/medical standards, slower pace, and more physical/less technical overall.
Klopp's Liverpool were/are clearly superior in athleticism, pressing intensity, tactical flexibility, and technical execution under pressure.
That high-intensity, heavy-metal football required elite physical conditioning, coordinated pressing triggers, and players who could execute at breakneck speed (think Salah, Mané, Firmino, Van Dijk, Alisson, Fabinho). They played a much more complex, modern game with better data-driven preparation, set-pieces, and positional play.
Modern football just demands more from a technically and tactically viewpoint. A top team today would probably dismantle any 1970s-80s side on pure athleticism, speed, and tactical organisation alone — even accounting for era adjustments.