Nobody was saying this at the time.It come down to simple things
Do we need that type of player?
The answer is yes and he has proved how good he is in the prem.
As for Liverpool, they bought two average fullbacks, overplayed for a forward and bought a player not suited to their system (whatever that now is)
In fact, fans here were apoplectic at them getting Wirtz and why on earth were they able to buy two full-backs when we weren't buying one. Then we had the Isak complaints.
There are no guarantees, and joining a club with significantly higher expectations and media attention is a different ballgame.