Probability theory has a concept called "expected value" (EV). The way to figure out the EV for any possible course of action is you determine (as well as you can) the range of outcomes, and assign a probability to each. Then you assess the gain (positive value) or loss (negative value) of each outcome. You multiply each outcome's gain or loss by its probability, and then you add all of those products together to get the overall EV. In simplest terms, +EV move is a good idea and a -EV move is a bad one.
This was a -EV move. The potential reward of a title is huge, and that's a reward that is more likely after the trade. But it's still a small probability, and that's offset by the near certainty that the Suns will be in much worse shape toward the end of the decade.
"Well I had to at least try" is the kind of fatalistic thinking that makes gamblers go bankrupt. There's a saying in poker, "Don't throw good money after bad." What it means is, if you've already played the hand poorly and are likely to take a loss, don't compound the error by doubling down on a longshot. Once in a while you'll hit and justify the risk, but usually you'll just make matters worse, like struggling in quicksand.
If Ishbia plays poker, I'd guess he's quite bad at it, and deludes himself into thinking that his history of poor results is just bad luck. Someone in the habit of making -EV plays will have the numbers come back and bite them, sooner or later.
There's another saying in poker, where you watch someone make a bad mistake and say, "I want that guy at my table." Mat Ishbia, have a seat.
