Sounds to me like someone, either on the far right or far left, trying to sabotage the reconciliation.
The “reforms” that came after the council were often unwise and badly carried out. Benedict himself has said as much. He has certainly said that about the liturgical reforms.
Now, if the SSPX gets more specific and specifies certain documents of Vatican II, that would be a problem. But een there, Cardinal Ratzinger repeatedly pointed out that, like any document, the Vatican II documents have been intepreted through two different lenses: the lens of continuity, the lens of rupture. I could readily envision an effort to get the SSPX to accept Vatican II documents premised on the former. Whether they will or not, . . .
Another possible explanation for this particular news item is that Fellay is doing some public negotiating, jockeying for position in the “discussions.”
The SSPX would have you believe that VII is responible for everything wrong in the Church when there was rot way before VII. In fact, I think VII might have been responsible for exposing the rot and bringing it into the light so that it could be dealt with.
Those people who interpreted VII wrongly were already subversive, they just thought that VII allowed them to become less subtle.
All in all many actions and interpretations were incorrect but many, many, many Catholics have been encouraged to actually know their faith and their theology rather than just going through the motions.
If you look at your own life you will see that when times are bad, when you are confused and afraid, and you see no other way out than to rely on the goodness of God is when you have grown in your soul, VII has been such a challenge for many faithful Catholics. It is up to us to help steer the Church by actively living our faith. Asking priests to be true to the faith and helping them to be true to the faith. And most of all, to support the Church with prayer because we can’t do a thing without God. It is He who will quicken the heart and heal the soul, through His Church.