Are you a sedevacantist? (I honestly don't remember.) If so, what you are suggesting makes perfect sense. However, If Benedict XVI is the pope, then I don't see how any Catholic is free to walk away from him.
You are required to disobey any authority which teaches or promotes error or is an occasion of sin.
You are required to submit to a Holy Pope yes.
The Apostolic Constitution also permits one to disobey a Pope who commits heresy, as per the Apostolic Consitution of Pope Paul IV. It states however that when he dies and a new Pope is elected and is not a heretic then you MUST submit. IE: You must recognize the errors and resist for the salvation of your soul.
This is and has always been the position of the SSPX.
You were not taught this because the Neo-Cath's and the Sede's want you to believe what they believe. However you'll note that the SSPX clergy are trained in Thomistic Theology, the way ordered to be trained by the Council of Trent, the Sede's and the Neo-Cath's are not. The Sede's are trained by apprenticeship and the Neo-Cath's are trained to be worldly heretics which the laws of Trent were meant to prevent.