Sorry no disrespect but I truly have no idea how people share this opinion. Day in & day out, he was clear as day going to become a bonafide #1 d-man, long time coming. Literally one of the most obvious cases in Lightning history. Aside from a small sliver of his career marred by a broken leg (plus another LBI in the same season), he has done nothing but improve in every facet of the game year after year to establish himself as a top player. It is not surprising, it's not some recent improvement, he is not bad defensively, and TB fans need to cope with the fact they traded one of the best young defensemen in the NHL.
He was an absolute stud all along, and it was painfully f***ing obvious to anyone with a set of eyes. That's why he is succeeding now with more opportunity than he ever had with TB.
JBB got a nice return and gained cap space, but let's see how the LHD situation looks in 1-2 years.