All of these things can be true. And even the best coaches (RMK included, per your examples), can't get their guys to play consistently hard, focused, or clean basketball ALL the time.
But they can nip the L O N G E R stretches of lower energy and focus, sloppy play, etc... in the bud, by focusing on it early and often, and not allowing his teams to get away with the highs and lows in practices. 3+ years in now, it sure doesn't seem like Woodson has made consistency, in much of anything, a priority in his program. In nearly every single game they play, his teams have long, prolonged lulls and stretches of poor or uninspired play.
Of course some that responsibility is on the players. But he's had 4 pretty different casts of characters now, and we're seeing the same traits in all his groups. I think there's enough evidence to make a pretty good, educated call, that Woodson isn't very good at establishing consistency in his teams.
I think its a larger problem than just his substitution patterns. But it is a VERY well established...basically fact at this point...that his teams efficiencies fall off the map when he takes multiple starters out of the game at the same time. I get the need to tinker early on in the season, to see what guys can do playing with different teammates, in different situations. His mass subbing style doesn't really accomplish that though...and its very proven and established that it destroys our performance and our efficiency metrics. Which, unfortunately, are important.