That is poor advice. There are now roughly a dozen people who have social media accounts in my name, because it’s their name too. This isn’t impersonation. It’s also not a problem.
Someone recently created a "duplicate" account for the dad of one of my friends. Same profile picture, username very similar. But one of his friends who received a friend request from the new account was already friends with the old account and wrote a message asking what that was about, which is how my friend discovered it. So at least in that one instance, having the account was helpful.