Yes, maybe the word is not invalid but unholy.
If the mass is composed of 3 principle parts (Offertory, Canon, Communion) then it stands to reason that if the Offertory is deficient then so is the mass. A valid consecration only ensures that the Canon is valid. It can’t ensure that the mass is perfect being that 1 part cannot perfect the other 2, for each part is separate.
The Offertory is important for the validity of the mass....or should we say HOLINESS of the mass. So, since the Offertory frames the PURPOSE of the Canon, the PURPOSE of the mass itself (by specifically mentioning atonement for sins, adoration of God, etc) then if the Offertory is deficient or if it only mentions 1 or 2 of the purposes of the mass (instead of all 4), then the mass is not perfect, therefore it is not holy, therefore it is displeasing to God, just as Cain’s offering was imperfect and second-rate. The Offertory changes are mainly what makes the mass Protestant - the minimization/deletion of the idea of an “offering” an “offeror” an “oblation” and a “sacrifice”.
Further, the systematic and pervasive “Communion in the hand” approach to Communion also attributes to the unholiness of the new mass, since the purpose and reverence which is essentially inherent in the sacrament is corrupted. Even if the Offertory was a perfect English translation, Communion in the hand is an abominable sacrilegious scandal which cries to heaven for reparation. (Of course, this assumes that the priest is actually a priest and his intention is also valid).
The further possibility that the priest could be a fake is another scandal and act of unholiness.
Then you have the problem of the priest (assuming he’s one) having a faulty intention of a “supper” or “memorial” or “remembrance” instead of an actual sacrifice. (I’ve had novus ordo people tell me that the sacrifice of Calvary was a memorial but the Communion sacrifice was real. Or vice versa. Or both are real. Or both are memorials. ...The fact that they even refer to the mass as TWO DIFFERENT SACRIFICES shows how much the new theology is a lie and an anti-catholic mess. And who knows WHAT the “priest” thinks about it all! His idea/intentions could be just as screwed up!)
So, just as a satanic mass can have a valid consecration but be be utterly abominable in God’s eyes because it’s PURPOSE is unholy, so the new mass’ deficient Offertory is imperfect and unholy, therefore the mass as a whole is imperfect and unholy.
We can say the new mass is unholy because the True Mass is perfectly holy, since it is from God Himself. Yet when the new mass changed from perfect to imperfect, through the actions of man, the result is an unholy liturgy because nothing from man is holy. It is not possible to improve upon God, therefore any change to His ways are a departure from He who is Holiness itself.