So if you don't privately depose bishops at will you are "tolerating" their heresies?
Stevus, if you tell people not to follow such a bishop, you are effectively deposing them. Whether or not they remain valid bishops with jurisdiction becomes a matter of theological speculation, as a matter of practical fact you have deposed them. If you believe they are the Church then you are to stand with them. If you do not collaborate with them then you are in effectively denying they are the Church.
What order of a conciliar bishop with jurisdiction over me am I disobeying?
Who is your bishop? Does he approve of SSPX mass attendance? If he didn't would you obey him or not?
Do you not submit to your bishop? You assist at Mass at a Conciliar church with a conciliar priest, no?
Going to mass somewhere doesn't mean I submit to the bishop.