Same thing happens with Cody. He gets completely frozen out by the veterans even Lauri. Honestly can't say that I blame them. These kids are not ready for NBA minutes while JC, Collins, Sexton, Lauri, Kessler are trying to win and more importantly earn their next contracts. Lauri is the only one of those guys with a long term contract.
It's just a really bad combo and the blame doesn't go to anyone except the front office. The focus was supposedly on player development and positioning for the draft. This doesn't align at all with having so many "vets" on the team who obviously have different priorities.