I agree with all of this. While we all wish we'd hire a young assistant who could become the next Popovich or Brad Stevens, McNair is looking for a turnaround next season. I am disappointed that it won't be Ham, or Hardy, or Lee, but I think the Kings are looking for more of a sure improvement, possibly at the expense of sustained, long term success.
That said, I was thinking about two other aspects. One is that McNair thinking short term may not be the worst thing in the world. Hopefully he keeps improving the roster and you get an experienced coach who helps the team finally break the playoff drought. Maybe the team doesn't get out of the first round for a few seasons and then you make another coaching move to "take the team to the next level". This coaching search isn't necessarily the one that gets the Kings to be contenders. it just has to be part of them actually winning more games than they lose right now.
Secondly, I also wonder if this list of finalists is largely about who was willing to take the job. It may well be the case that McNair WAS interested in Ham, Hardy, and/or Lee, but they are really wary of Sacramento being their first coaching job. That's understandable. Right now they are hot names, but becoming a head coach for a small market franchise with decades of dysfunction could hamper their future opportunities if it goes poorly. The flipside is that if they made the Kings a winner it would be a major accomplishment for them, but the risk probably outweighs the reward, not to mention the lower visibility of the Kings job.
Brown, Clifford, and Jackson are already known commodities, for better or worse. I don't think perception of any of them changes much if they take the Sacramento job. And they also know well that there just are that many head coaching opportunities. I think that makes them more likely to take the job. Which could be a part of why they are the finalists.