I'm not a dogmatic anything, but I think there's three major problems with Ladislaus argument.
The former is that couldn't one argue that Francis recent encyclical does not in fact speak for the church?
The second is that it would seem to me that if it is in fact true the denying the disciplinary infallibility of the church falls under some theological note below heresy, is it possible that what we currently see in front of us could justify us disagreeing with it even if it would have been temerarus in normal times?
Finally, even if we grant for the sake of argument that technically speaking a strictly celebrated NO is acceptable, isn't it more prudent at this point to attend a chapel not under the control of Francis simply because he has evidently in bed with globalist powers who desire and design our ruin? If the powers that be demanded that we simply never have mass again, perhaps because of a virus or whatever, Francis would comply. How can we trust him?
Then again, if I'm asking this maybe I really do wonder if he's really Pope. To be honest I can at least see a plausible argument that John Paul II and Benedict meant well and we're just sincerely confused. I can't honestly find a way to make that argument for Francis. It seems pretty clear to me that either a deliberate destroyer can be pope or Francis isn't a pope. I personally don't see how Francis can he in good faith