He's just slightly more "Catholic" (as if the term admits of degrees) than Biden, Pelos, Bergoglio, et al.
With the Conciliar Church, there is in fact a spectrum under their "big tent" ... from flaming heretics who pertinaciously deny many dogmas, who are termed "liberal" "Catholics" and then those who non-pertinaciously hold to only a small handful of errors (the "Trads" within Conciliarism), and those who are "conservative", meaning they only deny one or two dogmas, compared to the "liberals". Just the fact that the Conciliar Church recognizes all these as "Catholics" in some sense invalidates the entire religion.
If pertinacious heretics are Catholic and so are people who actually believe Church teaching, then whatever that definition of "Catholic" is that can encompass this entire spectrum or range of people, I am not one of those and I reject their definiton of the term.