Interestingly enough Ben Franklin actually agrees with you earlier in the book. "Most People Dislike Vanity in Others, Whatever share they have of it themselves

Interestingly enough Ben Franklin actually agrees with you earlier in the book. "Most People Dislike Vanity in Others, Whatever share they have of it themselves; but I give it fair quarter wherever I meet with it, being persuaded that it is often productive of good to the possessor, and to others that are within his sphere of action."