While there are plenty of perfectly fine boardgame groups, if you regularly read posts on the subject you'll find that a LOT of people have discovered that their local boardgame group is full of people who lack the social skills to make friends on their own to play boardgames with.

I agree with you that it isn't bad advice per se. But it should probably come with a warning that the local group might just be full of weirdos and to cut your losses if that seems to be the case.