Thiago over a CB is certainly debatable, but the logic in the football community was that signing Thiago would confirm us as league champions for 2020/21, adding a layer of creativity and class to a work-horse midfield, to combat the low-block champions face each year. It made sense.
We've just needed more signings than we got, IMO. The lack of funds forces Klopp and Edwards to pick areas for neglect.