I wasn't even expecting Liverpool to slow down because Salah left. Klopp knows how to handle his team well. The year Liverpool won the League last, both Salah and Mane left for the AFCON, and still Liverpool held on. It's just for a month at most and about 5 league matches would be played within that time.
Even with Salah injured, I don't think that would do so much to Liverpool.
I'm not surprised if Liverpool performance will be decreasing without Salah. But Klopp proved that they still could win the match with big scores without Salah. In the match against Bournemouth, they could win with 4 goals. They played without Salah, they have no problem to beat Bournemouth. However, I'm not sure they will be easy to score goals if Liverpool played against a strong team with solid defense. They actually still needs Salah for the big match.
I think in this case you are too underestimating Liverpool as if they can't do anything without Salah in the squad.
Although it is necessary to admit that until now Salah is a player who is a big hope, especially still being the top scorer but that doesnt mean without Sala in the squad Liverpool can't do anything.
There are still some players who ultimately support the squad such as Jota who currently has 7 goals in 15 matches although not as big as Salah's contribution but he can still be used as a reference for Liverpool now.
Not to mention some midfielders and defenders who are sometimes active to provide opportunities for goals so Liverpool will still be Liverpool who can be troublesome for their opponents.