There is absolutely a clear connection between lower minutes per game in the regular season and energy/performance in the playoffs.
There will always be an excuse to play good players. First game was it was Cleveland. Close, emotional game. Game two was a blowout, but Ray wanted to stay in. Then maybe game 3 will be close, so 40 minutes. You need to set boundaries and stick to them despite any excuses that may arise if you know they are good for the team in the long run.
Doc's job is to make hard choices. He knows that the playoffs are what matters and that it's clear that players wear down throughout the season if they play many minutes. That's why he makes big money, so he can say "I know you want to play, Ray, but we got this one, save it for Chicago."
Yes, it's only two games, but the limiting of minutes is a season long thing and you have to start when you can...and blowouts are the best chance.
I mean there's such a clear correlation between age, minutes, and late season performance, that I just don't see how anyone can logically look at this situation and think it was a great choice. This is the EXACT same stuff that happened the last two seasons and contributed to publicly stated, analyst observed and statistically obvious fatigue. And I like Doc as a coach, but this is his problem, always has been. The rationing of minutes starts now and lasts all season.