Ian Wright was saying the same thing, arguing it has no affect on others.
Well, that is not entirely true. Lets say Man City have 5 subs on Wednesday against Chelsea, rest 2 extra players with 20 minutes to go so that they are fresher for the Sunday fixture against Brighton.
We can't have one set of rules for some teams and other rules for others.
Also, if you are struggling to fill your squad with 2/3 youngsters that you can throw in with 15 minutes to go, maybe, just maybe, you are not the best team in Europe after all.