I have read a lot of articles and posts from reporters, seen comments on ESPN, as well as other reporters takes on why Cam was falling in the draft.
https://ftw.usatoday.com/2023/06/cam-whitmore-nba-draft-why-is-he-falling
I know for a fact that they said the Jazz removed Whitmore from their draft board.
If you look up Cam Whitmore sliding, there are a lot of things out there.
There are a lot of things out there. This doesn't say the Jazz blackballed him, but I also found this:
Eric Walden
https://www.sltrib.com/sports/jazz/2023/06/29/reviewing-some-details-utah-jazzs/
Speaking of Cam Whitmore …
Why did a guy ostensibly in conversations to go as high as No. 4 overall wind up dropping all the way to 20? And why did the Jazz pass on him not once but twice?
Talking to some people across the league, a few things kept coming up:
• Declining opinion on him apparently started a couple of weeks ago in many front offices, rather than the last few days before the draft, and some teams simply had mid-first round grades on him.
• It’s true that some workouts and interviews weren’t great, but those were secondary. The primary concerns were that his production at Villanova underwhelmed relative to his athleticism; the lack of a standout skill stood out; and several teams had concerns about his knees, with one team apparently outright red-flagging him.
• His slide probably was exacerbated by not working out for a team lower than the Jazz at 9. So, Dallas at 10, OKC at 12, Toronto at 13, New Orleans at 14, Atlanta at 15, the Lakers at 17, Miami at 18, and Golden State at 19, may have simply not gotten great intel on him, may not have been privy to his medical info, and thus felt they were operating in the dark too much to pull the trigger.