Anyone saying the Timberwolves can't advance in the playoffs is going to have to be more specific.
These Timberwolves did:
Andrew Wiggins. D'Angelo Russell. Jarred Vanderbilt. Malik Beasley. Jimmy Butler. Steph Curry*. Tom Thibodeau.
(* Curry never played for the Timberwolves, but should have.)
Imagine that lineup playing together. Curry at the point. Russell at shooting guard. Wiggins at small forward. Vanderbilt at power forward. Beasley off the bench. The Wolves could even trade Vanderbilt and a bunch of draft picks for an overrated center to round out the roster.
Thibodeau would turn this group into the kind of team nobody wants to play.