be good: If the guy specifically asks for the age of the girl being redt to him (something I would imagine most guys in the parsha do ask for), answering him that “she’s looking to date guys between X and Y years old” may not cut it.
Besides, to take your point full circle, if the guy only tells the shadchan that he’s dating girls between ages 25 and 31 and the girl only tells the shadchan that she’s dating guys between ages 30 and 35, is the shadchan supposed to figure, well, there’s some overlap there so let me redt the shidduch without asking anyone for their ages?