Much ado about nothing. The individual who was on the receiving end of the LinkedIn request is right , even if her response to the 20-something went overboard. If she had stopped at "Your invite to connect is inappropriate, beneficial only to you, and tacky" we wouldn't have even known about it. While that would have been a brusque response, it was still correct. I hate cold calls, because every single one (for me) i…
Do you actually use LinkedIn? You seem to be assigning a connection with some sort of profound meaning that it simply doesn't have. Indeed, if you follow LinkedIn's standard user flow, it will generate connection invites for anyone who you've ever corresponded with and saved as a contact on your email platform. If you get invites that you don't want to reciprocate, you ignore them.
And isn't it glorious irony that someone in the business of networking complains about someone trying to network?
Add that LinkedIn allows you to restrict who can even send you invites (which this woman didn't use), and who can see your connections (which is apparently the grave concern here).
Sorry, this woman was obviously having a very bad day, with a strange hint that they may feel threatened by youth, and decided to explode on a stranger -- in a very inappropriate and tacky way. There is nothing "right" about their action.