Really? I don't know where to start, but here goes. First off, Cayden has a better chance losing his identity playing away from his own twin brother than he does playing along side a bunch of strangers. Who else knows his game better than Cameron? Who else to pick him up after a rough game? They've been inseparable since their playing days in elementary school. They're both enjoying great success at the high school level. Not sure how much higher than being a top 20 player in the country you think Cayden could go.
Secondly, I don't know how one thinks Markieff playing along side his brother Marcus in high school and college had an ill effect on his career. ...If he had played elsewhere? The Morris brothers were both 1st round picks and have enjoyed success in the NBA. Not sure if you understand how difficult it is to make it in the league, let alone have 12+ year NBA careers. Both Morris brothers were lottery picks in the same draft and are still playing today. Mind you, if I'm not mistaken Markieff was drafted just before Marcus. Like, c'mon man!
I'm sure the ultimate goal for the Boozer's is to make it to the NBA and once there enjoy long careers. I'm sure they could care less who drafts them as long as they get a chance to play.