Not everybody goes from Traditionalist to sedevacantist in one day, and the derision from the arrogant dogmatic SVs here because he hasn't declared the See vacant is entirely uncalled for.
+Lefebvre also never declared the See vacant, for the same reason, that he "preferred to wait" (his words), and I don't see anywhere near the same derision for him as some here have consistently shown for +Vigano. +Vigano is clearly in "prefer to wait" mode.
Perhaps encouragenemt and support would do much more to persuade him to come out as an SV than the constant derision and contempt he gets.