Below is an excellent "house rule" on the Scottish Catholic Truth blog.
The 'rule' is a good reiteration [though perhaps unknowingly?] of the traditional Catholic perspective that has been long embraced and promoted by Archbishop Lefebvre and the old-SSPX for decades:
Since the election of Pope Francis, there has been an escalation of the crisis in the Church to an unprecedented level, with the Pope himself being at the centre of much theological and ecclesiastical scandal. As a result, many writers and bloggers have slipped into the habit of referring to him as “Bergoglio”. We ask our bloggers to resist the temptation to refer to Pope Francis in this way. We may, of course, robustly express our concerns about his statements and behaviour but we must beware of giving the impression, either that we disrespect the papal office itself, OR that we have fallen into the error of thinking that we have the authority to decide that he is not the legitimate holder of the papal office (that he is not “a true pope”) and/or the authority to decide that he is the “anti-Christ”. Our authority stops at the right to correct and resist any errors about God and His Church taught by anyone, including a pope, and that is what we hope to do on this blog. So, please refer to the Pope as Pope Francis, the Pope, His Holiness or whatever legitimate title you choose and do not express views intended to debate his election. He IS the Pope – a very bad pope – and any sedevacantist arguments, that is, any attempt to raise issues surrounding the legitimacy of his papacy will be deleted as soon as the administrator sees them. We do not have the required authority to pronounce on his papacy, so that line of discussion is off limits here.
"So let us be confident, let us not be unprepared, let us not be outflanked, let us be wise, vigilant, fighting against those who are trying to tear the faith out of our souls and morality out of our hearts, so that we may remain Catholics, remain united to the Blessed Virgin Mary, remain united to the Roman Catholic Church, remain faithful children of the Church."- Archbp. Lefebvre 1980