I was thinking the same thing as well, concerning how Liverpool will be able to cope without their hit player, I later realized that one thing with nature is that, nature will always fills every gap, might not be exactly the way you want it, but trust me it will be filled up. You can see that the other players have come to the realization that their hit player is not around, so they need to play to leave up to the expectation of the club and so far they've been doing very well. The players you mentioned in their last match, where very brilliant in their pattern of play especially Diogo Jota and Gakpo.
When he said miss Salah as the playmaker, I paused a minutes to recheck the statement, he was right but the last time I see Salah as playmaker was 20/21 season, since then they have not been doing much again, the fallout started when Mane left. Manse was even more of playmaker than the way Salah was when he came but their two contributions in the Premier League was unmatched but that wasn't the case anymore.
This season was fair though. They have made names for the club again but Salah absent shouldn't be a big deal. He is even injured from the Afcon match he last played and the agent comfirmed that he will be away for 21 days atleast, so basically he is missing the rest of Egypt matches for Afcon and there position on the group stage is also bad but that is going to be his less concerned since Premier League is the ultimate goal to return to because if they mistakenly drop form this table, that is going to be the beginning of their fall from top 4.