I honestly do not understand how people are mad at this. People have complained for years about the steelers being too conservative and content to be 500, never making the big moves. Now they make moves and people lose their minds.
The steelers have an expensive defense. This is possible because nobody on the offense makes any real money. They can't keep this defense together for too much longer. That means they have a window to win a super bowl while they still have Cam, TJ, and Minkah together.
There is no great team in the NFL. The Chiefs just won with a tough defense, run game and timely plays from a great QB.
The offseason is just starting. They will address the OL. They will likely add more to the secondary. They will add WRs.
Upgraded OC. Upgraded QB. Likely upgraded OL. Fixed the biggest hole on defense with Patrick Queen. A few more good moves and this team is a real contender.