Very true, as well as seeing Dembele losing form and putting all faith in Eriksen/Alli/Kane. Last season you feared the system, where the full-backs surged forward and where Dembele was awesome at shielding the back-line. Now their defensive unit is just good, not great - and their central midfield is weak. Harry Winks is average and Dier is just another player. Teams mark out Eriksen and Alli, which cuts the supply for Kane. When they play Sissoko you know they are in trouble.
The loss of Walker was played down, the loss of Rose even more - but now we see the difference between very good full-backs working in a system, vs. mediocre full-backs trying to do the same. Trippier and Davies, as well as Aurier are all just average.