I'm honestly not surprised, and thought it was bound to happen.
They obviously won't admit it publicly, but the players have to be feeling irritated at all the media coverage and hype Lonzo gets, despite Kuzma looking WAY better at the moment.
Also, you have Clarkson and Randle at the center of trade talks almost every day now, despite what they've done for the team.
Hell, the Lakers had to have a meeting with LaVar for him to tone it down with his criticism of Luke Walton
So obviously, some players are pouting and frustrated, and of course the losses only add to that "fuel".