Also a lot easier to put a well drilled defence together with your better defenders available. The difference in goals conceded under Ange between when Romero and VdV played and not was rather large. Only for the last 6 months he had Danso available. Remember Emerson, Gray, Davies etc at CB, Forster in goal. (Not all at the same time obviously). Had to do without players in the engine room too. Bergvall played most of his games as one of the two deepest midfielders, Frank has never had to use him there. Bissouma has been brought back now because we have no options, he was mostly first choice under Ange. Johnson was mostly first choice, has been sold because Frank got Kudus instead. We didn't have Solanke all of Ange's first season. We did have Son and Madders of course, but also Werner, Richarlison, Solomon, Gil, Johnson. Players who either has been available to Frank too or has been shipped out because they weren't seen as good enough.
I think Frank will get replaced too, more a matter of time. Could it wait until the summer, maybe, but I doubt it. Having a mostly full suite of players at any point would be great. We're without Kudus and Bentancur for a while now. Maddison probably the rest of the season. Tips on a post-it for the next player to get injured, the situation we're currently in tends to bring more injuries before it gets better. Unless a manager makes some real hard priorities on one competition alone and then gets sacked for not competing on multiple fronts.
Frank would have done better with a full squad of key players mostly available, obviously. He's also done a imo really poor job here with what he had available. As I've stated before the comparison being Ange, who was sacked despite winning us our first trophy in 17 years, speaks to how low the bar has to be for Frank to even be defended.