"So you would be in agreement then, there would be nothing wrong if everyone played their scrubs against all your divisional opponents all season and lost every game to them, then in turn they play their regular roster against you? Interesting! I would bet if that happened in every league you are in, you would change your mind."
This is a strawman argument. It would be difficult, if not completely impossible, to imagine a situation in which it would be in the interest of every other team in the league to go 0-36 against my divisional opponents.
But from a purely theoretical perspective, I would have no problem with this. I go into every season figuring that every other manager in the league is going to do what's best for their team. 95+% of the time, this means putting your best team on the field and playing to win. A small percentage of the time, it may mean resting a bunch of players at once, or throwing a mop-up for 255 pitches, or even strategically playing to win (or lose) against a specific opponent in order to optimize post-season chances. And I have no problem with any of that.