I think DL is a reasonable guy but I don't know how much, if any, final say he has. I think the rest of the FO is okay with the tank, but only passively -- which isn't too surprising as mostly everything the franchise has done since Larry stepped down / died has been passive. I'm still uncertain of Corbin's fate with the franchise and how much say DL has in that. Burks, Gobert and especially Kanter can play more and as you said, it's win-win. There's absolutely no argument not to play those guys. Being inexperienced or not ready doesn't even apply (que "teh efforts!!!").
I think that we saw Lindsey take the reigns this offseason. The Jazz have appeared to be much more aggressive and foward thinking once Sloan left and KOC stepped back. Lindsey may have input now from Corbin, Sloan, KOC, Rigby and miller but I think he is running the show now. I hope so at least lol.