Are we going to argue semantics now? Outcomes aren't deterministic and just about anything said here is an opinion, so it feels redundant to state 'it is my opinion that the high ceiling outcomes have exceedingly low probabilities of occurrence' and figured the shorthand 'role player ceiling' was fairly easy to understand. If I search your usage of the term ceiling in your posting history, am I not going to find the same wording you object here? come on...
Needless clarifications aside, teams sell themselves into taking these projects all the time and of course there is a rationale behind it, but it's usually based on elaborate projections loosely rooted in reality. For Salaun specifically, all you read about is his character and work ethic, which is obviously great but hardly enough to become a high level NBA player. I could see the case if we were talking about an African kid who just picked a basketball at 15, but he's been playing the sport his whole life in some of the most prestigious programs in the world and yet he's painfully raw. That is quite a red flag to me.
I've said numerous times what I believe Salaun is right now and what he could realistically become: he's long, hustles like crazy and shoots with confidence with mediocre efficiency, but doesn't look like a super fluid or coordinated athlete , isn't bouncy, his skill level all around is quite poor (ball handling, passing, atrocious finishing at the rim), and doesn't stand out as a high level processor of the game. Those aren't easy to improve especially if you've been properly coached since childhood. What does that "high ceiling" of his look like in practical terms? Who do you see him possibly becoming and what would be a realistic path towards it?