It doesn't matter what your best strength is if you're also good at other things. Loads of great players were great tacklers. Many great fullbacks were exceptional tacklers and made it a pivotal point in their game. If you believe Berti Vogts would be redundant in the modern game then I don't know what to say.
You've jumped around a lot there. Are we only talking about fullbacks or are we talking about Busquets? Are we talking about prominent players or supporting players? Trying so hard to avoid answering the question makes for a pretty silly waste of time on both sides, I think.
Serie A in the 80s was the model for great football. And now it isn't. But inevitably an evolved form of it will come about again, in the same way it was an evolved form of Catenaccio in the 60s. And in between times you had Cruyff and Beckenbauer defining European football, with a
slightly different style of play. Somehow none of those era defining styles stuck, but this one is
the one? Ffs
I'll leave you to it you football visionary