For sure, it's a preposterous idea in a rational world. But I'm not sure this blogger is misreading the tea leaves. Whether that's because Boras always gets his way or because Harper's not as purely selfless as we'd like to think or simply because Middleton's relationship with both is so strong that he will do it as a goodwill gesture (and really, so long as it doesn't directly hinder the team's ability to do other things, why shouldn't he? It's his money).
The crux of the argument seems to be that since Bryce didn't take an opt-out out of the goodness of his heart the Phillies should bring his deal closer to current market value out of the goodness of theirs. There is no reason to do this in a vacuum. But Bryce has that kind of symbolic power, and Boras sure has that kind of negotiating style.
And it gets even more interesting if the Phillies actually need to sign a major Boras client this off-season. Rhys is one of those, of course, but so are the two best American pitchers not named Nola.
I don't know that this actually happens this off-season. But it probably happens.