If you trade Booker to the Nets and aren't able to resign Ayton (or somehow replace him with comparative value), then a team with KD, CP3, Bridges, Johnson, and smaller role players is absolutely not a championship team unless everything goes perfectly. KD and CP3 are in perfect health and not worn down, and both Bridges and Johnson take a solid step forward.
Now if the Suns were to sign and trade Ayton to the Nets and retain Booker, yeah that team is pretty scary.
So what you're saying is that the team isn't winning everything even if they keep Booker if they lose Ayton. Not sure why ownership doesn't agree (or care).