That's a distinction without much difference. but that said, yes, a culture fit focused hiring practice has dangers in it. Hiring form the same class and background, etc. (which happens in tech, finance, as well as your ethnic grocery store).
I have to disagree. Professionalism is not the same as culture. Every employee should strive to be professional and every company should strive to hire only people who demonstrate professionalism in their demeanor, communications, interpersonal relationships, etc. That's very different from "culture" as many HR departments see it, where fuzzy criteria cover everything from humor style to hobbies to age and gender.
