These conversations about Pogba were all happening well prior to Bruno signing.
I regularly disagreed with the people saying it back then. I thought it was obvious then, and is obvious now, that his best position was as the most attacking midfielder with the most freedom in a three man midfield. It never made sense to me why Mourinho and then Ole didn't build the midfield with that in mind. While Pogba himself certainly wasn't blameless (he still could have performed better), he was being set up to fail to some extent by the poor balance of the entire system around him.
It wasn't as simple a case as just playing two midfielders behind him. Mourinho did try that at times but our midfield options were so bad (I think we tried Fellaini and Herrera with him for a while) that Pogba would still have to drop and be our main deep playmaker simply because the others couldn't do it. But transfer window after transfer window passed without us signing the midfielder suitable to allow Pogba to play in his best role. The Matic-Herrera-Pogba combo was the closest to a balanced midfield that we used, and it had great success with a fantastic win rate.
However everything changed when we bought Bruno. His best position is basically the same as Pogba's best position, just slightly pushed up a bit in a 4231 instead of a 433. The same two players that we should have had playing behind Pogba are the same two we should now be trying to have behind Bruno. Two players who are both decent defensively, fairly good on the ball, and between them can control the team and the tempo of the match.
Once we signed Bruno and he had the impact that he's had, I simply don't see how we can fit both of them in the team on a regular basis unless we move one of them out of position and hope it works - Pogba onto the left wing or Bruno perhaps in a false #9.