I commented on FB, I think it’s worthwhile to repeat the relevant parts here, But first I would echo father Matt in saying, do what your bishop tells you to do.
I agree that there is a massive problem of converts being accepted into the Church who bring in their own ideas, own conceptions of theology and morality, and assume, wrongly, that the Church teaches what they should believe, or worse, “should teach” what they believe.
Does the issue of acceptance by chrismation play into this? Probably. Certainly, doing so seems to send a message that “some things you already believed were right” that can seem to extend beyond the bottom line of baptism to all sorts of beliefs and practices.
I myself was accepted by chrismation, and worried about it at the time. I had been baptised by both Catholics of the 1960’s and Baptists of the 1970’s (that didn’t recognize the Catholic baptism of sprinkling). My own opinion, correctable by the consensus of the Church fathers, is that God’s grace can certainly extend to bless a baptism carried out by the heterodox, which in all cases would have to have been Trinitarian, with water and in the name of the Father, Son, and Holy Spirit. But our Faith is not magic, and the idea of “you must do this procedure in exactly this way” seems to be exactly that, foreign to our Faith. At the same time, however, there really are widening differences between our Tradition and the more malleable (to put it lightly) traditions of the Trinitarian heterodox, that are continually falling further and further away, and it seems to me that that falling away would probably necessitate an increase in the need for formal Orthodox baptism. I speak as an ignoramus, prepared to correct anything I am mistaken on from the consensus of the fathers.
I do think that, more important than any formal conduct of a sacrament is the believer’s attitude, which HAS to be one of humility, obedience, and accepting the correction of the Church. Your bishop may be in error around something. He may even teach something that turns out to be heretical. But if we hold our hearts and minds opening to be taught by the saints, I think we are still on good ground. The problem of good catechesis seems to me to be a more burning issue. Do we really believe the same things? Above all, do we accept correction, not from Fr So-and-so of St Tikhon’s or St Vladimir’s Seminary, but from the consensus of the fathers? Do we say in our prayers, “Lord, I can’t save myself, I need You to save me!”?