Orthodoxy has always come across to me as a bit shady (quite aside from their having separated themselves from the unity of the Church) --- it's very hard to get a straight answer from them about matters, it's "this Father of the Church said this", "but this Father of the Church said that", and if you remind them that something is theologically unsound, they just resort to mysticism and all sorts of gobbledygook.  They don't draw a strong distinction between Divine Law and canonical discipline, and they use ekonomia to justify deviations even from what would seem to be Divine Law --- second marriages, and now, even contraception.  The best I have ever been able to determine, it goes something like "sometimes sin can be tolerated to avoid a greater sin or evil", almost like the priest or bishop is being used as a kind of "sin-eater", or as though the Church, as they see it, can dispense from Divine Law as needed.  Totally bogus.

And as to sacramental validity, they will come back and say "we don't view 'validity' as a black-and-white thing, we know more where the Grace of God is, rather than where it is not".  Or something like that.

SMH.

What it does accomplish at least is to sift the ortho-bros in transit from Protestantism.

The conversation here seems to assume that Orthodoxy is a centralised, monolithic entity after the fashion of our own western Catholic Church. Rather, Orthodoxy is a confederation of local Churches confessing the same creed (but not necessarily sharing the same understanding of doctrines and morals) and possessing apostolic sucession (in their own view) which choose to extend ecclesial communion to one another. This last point is interesting since Orthodoxy has been split in two separate communions since 2017 over the ststus of Orthodoxy in the Ukraine, 2/3 of the national Churches following Moscow in its schism from Constantinople and the other 1/3 remaining with the Phanar.

Additionally, there are the "True Orthodox" Churches that are not in communion with Constantinople or Moscow. These noncanonical Orthodox Churches are Old Calendarists, anti-ecuмenical, demographically small, and very cranky.

... anti-ecuмenical, demographically small, and very cranky.