Of course. That was the only point of my response: challenging the logic, which to be fair to the poster is not unlike the logic employed by most of the legacy admit supporters. “It’s no big deal. Plenty of other schools that don’t do it.”
But of course I suspect a great many of us would not support active discrimination against Asians in the admission process even if it were not illegal. So, I’m guessing the “they can just go somewhere else” rationale wouldn’t sit well with those of us who would feel that way regardless of the legality of the discrimination, as you seem to suggest below.
And that’s all that’s happening here. People can rest assured their pearls are firmly in place where they’ve always been.