The hypostasis of the Spirit is defined by His procession from the Father. Procession through the Son does not define the hypostasis of the Spirit (filioque says it does, which is why it is a heresy),
This is quite false. You and St. Photius make the same error.
Glad you put me in the same camp with the Pillar of Orthodoxy, showing that my statement is quite true.
The Catholic Church explicitly teaches that filioque is not a statement concerning the source of the Holy Sprit, and explicitly teaches that the Father is the source of all divinity.
The Catholic Church doesn't teach filioque at all.
As for the Vatican, it is quite good at saying one thing and teaching another.
So you are in error here.
Not according to the Orthodox Faith that the Catholic Church confesses.
Just another way in which you set out to distort the teaching of the Catholic Church,
I never distort the teachings of the Vatican, let alone the Catholic Church. As to the Vatican, is it possible to distort a distortion?
the Church of my baptism.
Not if the Vatican installed the priest who baptized and your sponsors confessed the filioque (or communed with those who did), it isn't.