I personally would not go to one as time passed. This was partly because the sermons sometimes where "we must believe what the pope teaches except when we shouldn't, and we must submit to the pope except when we shouldn't" variety. This from a man who was very sound theologically in other areas. Very sober, logical not emotional or flying by the seat of his pants. I believe such sermons are a danger to my wife and children.
I also don't wan anything to do with the Novus Ordo Church which is our enemy. And going to a Mass that acknowledges the head of the Novus Ordo Church as our Pope keeps us attached to that Church at least in a small way IMO.
This is kind of feeding the monster that is trying to kill us IMO. Quite acknowledging him I say. But these are confusing times. One must do what one must do which is to follow his properly informed conscience or one formed to the best of one's ability.
Okay, so in your particular neck of the woods, it's acceptable... but if it were up to you it wouldn't be. Would that be accurate?
I readily admit that I lack the authority to insist on a conclusion. Even if I were a Priest or Bishop I would not insist on it either way with my parishioners. It is simply my personal opinion (which is not 100% conclusive either way) which could be erroneous.
The current issue had not been addressed in regards to our exact circuмstances in a definitive or authoritative way. Father Stepanich who was the most qualified clergy alive in our day said one could go but did not have to. I'm not sure how anyone could claim, for sure, he was wrong. I also do not know how one can definitively claim he was right either as the issue has not been addressed in depth by sound theologians under a valid Pope.
I believe it is a conscience thing until the issue is settled under a future valid Pope.