Why not sign out of your Gmail / Google Account before posting? If it is a YOU TUBE Sign-In issue, can you edit your account to remove your real name? Also, what is it you could be posting that you don't want getting back to you? Be proud and stand behind what you do. Have conviction in any statement.
Odds are, if someone wants to find out who you really are, they will. Or just avoid Google PLUS, as you say.
Regardless, thank you for the heads up.