Maybe it will be like that because he is still very young and has more potential in my opinion.
I agree with what you said because Liverpool will not give big money when indeed they do not know for sure the performance of the player to be bought and so far I think Liverpool's expensive purchase is still in good terms because before Nunez there was also Alisson, Van Dijk and even Jota . But the price is quite worth it in my opinion. Now Nunez can be said to be another expensive player and this has to get better of course.
So far, Liverpool scouting team is very competent in their work, players who have been brought in have always been new idols at Anfield. Who knew Mo Salah could develop rapidly after becoming part of the Liverpool squad, whereas previously Mo Salah status as a Chelsea outcast. Although at the beginning of his arrival many people doubted Mo Salah, but he was able to answer all these doubts with his performances on the field.
Nunez needs time to prove his quality to become a new idol at Anfield, he needs at least until the second half of the season, and Klopp is well aware of the potential Nunez has.
Agree with what you say in this case Liverpool scouts are really observant when it comes to players and they don't hesitate to buy at a high price if indeed it can make them play better.
But in this case, in fact, regardless of whether or not Nunez's capacity has been tested in the Primeira League and indeed he just needs to continue to hone his skills and Liverpool (EPL) is perfect for him because this can make him grow and get better.