MAVS 108, PELS 92

[Kammrath]

Because he doesn't think it gives him any information he considers reliable.

I could be wrong, but I would bet a lot of money that Kidd thinks that +/- lineup data is in fact reliable and gives useful information that he takes into account as a coach. I cannot imagine any modern coach refusing to look at that data or thinking it doesn't have something to offer. Again, I bet Kidd was protecting his players and also pushing back against knee-jerk interpretations of such numbers. 

One thing I feel like I can be quite certain of: the analytics department guys for the Mavs are not blowing off Luka's +/- numbers so far. I bet they are digging into those numbers trying to make sense of what is going on. Nothing may need to change and things may "correct themselves," but if you care about the team then you don't just watch the Mavs getting outscored by a rate of 10.6 pts when Luka plays and not pause with concern and curiosity.