Yes we are going to have to agree to disagree.
1. You pretty much moved the goal post when I proved Giannis plays back to basket by basically saying "Well he couldn't do this during the 90's because the guys were bigger back then." Why wouldn't Giannis be able to go through Ostertag,Hakeem,Mutumbo,Mourning,Ewing,Smits,Duckw orth. They are all in the same weight class as Andre Drummond and he easily went through Drummond a bunch of times. I have seen Giannis also go through Embiid who is listed at 280. The only guy I don't see him being able to go through is Shaq. I don't get why you listed Smits. Smits was slow as . Giannis could just go by him easily on every possession. I grew up in NC watching the Hornets and saw both Mourning and LJ have their way with Oakley in the paint. Oakley was just a dirty thug that would give hard fouls but both of those guys took turns abusing him. Giannis is bigger than LJ and is the same size as ZO. ZO was able to post up and bang in the paint I don't see why Giannis wouldn't be able to do it in the 90's. The only case you have with the Davis bros and Oakley is that they could have injured Giannis with their dirty flagrant fouls but he would've adjusted and gave it back to them since he's a pretty big guy.
2. Dave couldn't post up it had nothing to with having ty teammates. He was never a post up player like Hakeem,Duncan,Shaq where you could throw the ball on the block for an iso play.
3. The problem with doubling Giannis is that now he has become a better playmaker. He's good at finding the open man. I don't think there is a team that is currently assembled to defend Giannis right now. You need at least one super athletic big that can stay in front of him along with a strong rim protector in the paint waiting for him much like Toronto had with Ibaka-Gasol-Siakam in '19. With that being said the Bucks can still lose next year to the Nets simply because they don't have the offensive firepower to contend with them when they are healthy. You could have a series where Giannis is averaging 30-40 against the nets but his team still loses.