> But the claimed response of the hospitals also sounds perfectly reasonable to me.

Keep in mind, a major part of his paper was about how the pseudo-patients were admitted after describing extremely limited and mild symptoms. And a major part of the investigation was determining that, at least in one case, this is untrue; Rosenhan claimed to have extremely severe symptoms, including suicidal ideation.

In other words, it now sounds like the hospitals responded reasonably, but Rosenhan's paper claimed something quite different.