If that is their solution it's not an acceptable one, or at least not one that should be expected to produce anything more than 7-8 wins.
Okorafor was below average at right tackle and I would speculate he was probably in the bottom 20 percent of all starters at tackle. Not impressive against the pass and seemed clueless at times in the run game. Banner has the ability to dominate for the ground game, but is subpar in pass protection. With the right player, left tackle is a plug and play player. The Bucs arguably had the best RT in all of football last year as a rookie. Regarding Pouncey, I appreciate everything he's done for the Steelers over the years, but he's done. He's already thinking retirement and he gets physically manhandled by the powerful IDL in the league. I don't know if you can pull a rookie LT and C starter from the draft, but they need to at least sign a veteran stopgap. Pouncey's play vs. performance just isn't worth his cap hit.
All of those players are replaceable, it just isn't a great way to build a team. You're losing talented young players with the potential to improve in favor of keeping older veterans on the downside of their careers. There's a lot of loyalty when it comes to those veterans, but they're going to be there to help the team for maybe 1-2 more years while those other guys could contribute for at least another 4-5 years. Without the pandemic, the cap issue wouldn't have been nearly as bad, but this is the reality now