For all of Ayton's offensive prowess (he's significantly more polished on offense than Wiseman is at the same age), he was legitimately one of the worst defensive bigs in his rookie season. The Suns were going through a rebuilding period that season too, so he had a longer leash, one that won't be afforded to someone like Wiseman.
Even if the Warriors do draft Wiseman, it's hard to see any scenario where he ends up playing a pivotal role with the spacing restrictions that Draymond and he will have in lineups. It's partly the reason why they're targetting versatile wings because they can't afford to have redundancy on the court with two players (Draymond + x-big man) who aren't reliable shooters. EDIT: And it's why I like the potential fit of someone like Deni, because he's 6-10 and has shown the potential and work ethic to shoot lights out. That's the type of player the Warriors need to make the most of their current window.