Many RC efforts in Russia are of the whole "just Orthodox in communion with Rome" deal, making the claim that it's no different, really...just a switch of which heirarch they commemorate in Liturgy. With that being the case, we most certainly DO object to their efforts.
Again, provided that our territories are recognized as a distinct and separate faith (which they're not, at present), there would be much less outrage, I think...much of the Orthodox indignation at efforts in Russia is due to what is perceived to be a less-than-up-front MO; many Russians and Ukranians are told that they are "Orthodox in communion w/Rome" now, when in reality, they have ceased, in our eyes, to be Orthodox at all.
I would have sworn that I replied to this point earlier, but I can't find the post ... so ...
To say that many RC efforts in Russia are directed at bringing currently RO faithful into the status of "Orthodox in communion with Rome" isn't really accurate as that presupposes bringing them into the Russian Greek-Catholic Church (RGCC), as opposed to the Latin Church. The RGCC is, at best, one of Rome's most neglected stepchildren among the Byzantine Catholic sui iuris
Churches, having been without a hierarch since the death in a Soviet prison, more than a half-century ago, of Blessed Father Archimandrite Kliment Sheptitsky, the last incumbent of the Apostolic Exarchate of Moscow, the sole Russian GCC jurisdiction in Russia.
Despite multiple and recurring requests that the RGCC See, which is extant, though sede vacante
, be reactivated, Rome has taken no action on the matter. The four (I think) Catholic canonical jurisdictions in Russia that were recently elevated to the status of dioceses were all Latin jurisdictions, not RGCC. Informed speculation as to the motivation behind Rome's apparent decision to limit its focus in Russia to the Latin jurisdictions is that doing so is not seen as threatening to its rapport with the MP, while any move to enhance or strengthen the RGCC status would be looked upon as a potential move toward prosletyzing the RO faithful.