The reality is they were very lucky previously with injuries, almost freakishly lucky. Of course they were all saying then "great analytics, superb scouting, you can scout for injuries, superb training methods, Bayerns physio makes all the difference" etc. So when it went well, it was systemic and not bad luck.
Now there is some mean regression and it's just "bad luck". So when it goes well it' down to Liverpool doing well and their responsibility. When it goes badly, it's nothing to do with them. It's another intellectually incoherent way to construct an argument.
Even on injuries (which is dubious anyway for reasons I mention below) what has happened is quite clear. You have a manager who only knows how to play a high intensity game plan. They have prioritised keeping the squad together and its aged together. It's gone from being around the mid table for age profile, to now one of the oldest teams in the league (they sit top 5/6 the last time I checked). Next season no doubt they will be be even older. Essesntially those players, cannot sustain his game plan.
Whats also clear, is they have no plan B. All you get from all of them is, "oh why don't we just go back to the attacking thing we were doing before" and you think- because it's not working, it won't work going forward and your players can't sustain it anymore. You look at Pep for example, who had a similar injury crisis last season, he recognised the league was gone, took the year off and developed a completely different way of playing- essentially eliminating the need for a striker. It's smart management. Klopp doesn't have that in him. It's why Pep has all the trophies he does, and Klopp doesn't.
Worryingly for them, even their younger players look shot. This is the other side of it. Not only can't they sustain what Klopp wants, but they are starting to get injured, and where not enough concern was taken in letting them rehabilitate, they are starting to break down. You see it Fabinho now, he will now quite quickly become injury prone. Posh boy Chamberlain is another, Keita, Gomes, potentially Arnold etc are all now very injury prone.The damage is done whoever is manager.
Anyway, why injuries is rubbish too. On Wednesday they had;
The best fullbacks in the world
The best midfielder in the world
The best ayer in the world (Thiago)
Their first choice midfield they all wanted
2 of their first choice front 3 (who are also the best in the world).
Essentially stick a centre back next to Henderson and have Mane playing and it's basically their best outfield 11 give or take.