We're just gonna have to agree to disagree here. I think this statement's false, and it's kind of the lynchpin for everything else we're discussing, so may as well move on.The very definition of a player with a high ceiling is one with elite length and athleticism.....I don't know how else to say it.
Olynyk is a 35% 3-point shooter which is standard for a stretch-big and the fact that he stands 7-feet tall has to be taken with a grain of salt as he doesn't possess the skills of a typical 7-footer. He's a terrible rebounder for that size, terrible shot blocker, and not quick/athletic so while "he's a 7-footer with a competent 3-point shot" his ceiling is very limited as to how good an NBA player he can be due to his physical limitations that cannot improve. That is what defines him as a classic "low ceiling" player which doesn't mean he can't be effective in the league it simply limits how good he really can be.
Yes, Olynyk "could" be hugely valuable as a stretch-big but again......these guys are all over the place. Crazy length and athleticism like Giannis and Rudy are rare and IF they develop their skills you have something special who can be All-Star caliber player.....that is the definition of a high ceiling and not a 7-foot stretch-big who can't develop his length and athleticism.