The OP should have outlined all reasons for schism, including sedevacantism, and after listing them all he should have then stated this the wanted us to ignore sedevacantism.
I think one of the other reasons for schism is refusing communion with fellow Catholics. To my knowledge, CMRI does not do that.
If refusing submission to the Holy Father is one of the reasons (it is) then both sides have to be reviewed in light of the facts of the time period we are suffering through. For the sake of this discussion, everyone should refrain from the sedevacantism subset of schism.
Does CMRI possess valid orders? Has the novus ordo ever rendered a judgement or even opinion on that? Until we are know otherwise, the answer is yes.
So if there are only three components of schism, and we put aside the refusal to submit to the holy Father, then we can't conclude that the CMRI is schismatic.