Why? I believe even Bais Din would not say so.
In conversations with someone familiar with Choshen Mishpat, it’s clear that shadchanus is like any other profession and is entitled to compensation, and can have a beis din enforce that.
The reason I differentiate between shadchanus and other work is because of the emotional aspect of it; people feel that shadchanim should really be doing it for the mitzvah, and are put off by financial talk (although they shouldn’t be).
I think “on the ball” has the best attitude here.
I agree.