Which, BTW, is the problem.
Is it right, wrong, or does it vary with the situation?
You will likely find a variety of opinions on this one.
Some are dead set against ANY form of contraception (even NFP), some say it is alright only to space out children, others allow it due to the unitive nature of sex, etc.
Being against contraception is not peculiarly Roman Catholic (like believing the office of the Pope is of divine origin and the channel of the church's infallibility on faith and morals). It's not even peculiarly Catholic in general.
Before 1930 all Christians agreed it's wrong. ALL.
Including Protestants from high-church Lutherans to hardshell Baptists to writhing Pentecostals. Including... the Orthodox.
Given the decentralised nature of the Orthodox communion - not only no Vatican but not even a Lambeth (being invited to which defines who is Anglican) - it's fair to say there is a range of opinion on it there now, from agreeing with Rome/the early church/the Orthodox before the 1950s or so to more or less where mainline Protestantism was on the subject 50 years ago (it's between the couple, the minister and God, and only for the married).
One bishop, even one patriarch, issuing an encyclical yea or nay on the subject would not define Orthodoxy like the Pope does for Rome.
Citing widespread dissent on this among RCs is a slippery slope used by pro-aborts and people who believe in same-sex marriage (which is where the mainline Protestant churches are now: almost anything goes in a 'loving relationship' of consenting adults, hetero or same-sex). I don't think an Orthodox wants to use that argument.
Nice to hear about Western Rite ROCOR but...
'The Divine Liturgy of St Gregory'? Why not call it what it is, in all its goodness: 'the Roman Mass'?
Byzantinisations like that are like when a Greek Catholic
takes down the iconostasis
and has groups praying the Rosary in church. For the same misguided reason (proving one's loyalty to one's church by copying its majority rite and differentiating from the bigger church that uses your rite). It's just not on.
Besides the Orthodox already have a Liturgy of St Gregory (Dialogos, the Pope of Rome), that of the Presanctified Gifts.