But which (Eph. 5:25) refers to the universal body of Christ, which alone is only made up of believers who are baptized into it by the Spirit, (1Cor. 12:13) which is the one body of Eph. 2:20; 4:3, while the various visible churches are not. One cannot separate from the former, but must separate from one of the latter when it becomes critically aberrant.
Rome counts and treats even prosodomite murderers of infants as members in life and death, and the majority of her member are liberal, in contrast to her evang, counterparts, thus manifesting what she really believes, (Mt. 7:20; Ja. 2:18) in addition to doctrinally being critically in error. Thus requiring separatism from her.
Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness? And what concord hath Christ with Belial? or what part hath he that believeth with an infidel? And what agreement hath the temple of God with idols? for ye are the temple of the living God; as God hath said, I will dwell in them, and walk in them; and I will be their God, and they shall be my people. Wherefore come out from among them, and be ye separate, saith the Lord, and touch not the unclean thing; and I will receive you, And will be a Father unto you, and ye shall be my sons and daughters, saith the Lord Almighty. (2 Corinthians 6:14-18)
This statement requires careful distinctions.
First, I agree with you that it is a damnable scandal that members of the hierarchy are disobedient to the Church's own authoritative teachings, as found in Scripture and the teachings of Ecumenical Councils, and as codified in Canon Law. What we're dealing with here is disobedient clergy, who do not count, individually or collectively, as "Rome," let alone as "The Catholic Church" itself (though they are Catholics.)
I wouldn't expect you to have followed the ongoing discussion of Canon 915 in the Catholic community here, for the last, oh, 15 years, but please realize what the Canon requires:
"Those who have been excommunicated or interdicted after the imposition or declaration of the penalty and others obstinately persevering in manifest grave sin are not to be admitted to Holy Communion."
Therefore all those Bishops and other clerics who are "admitting to Holy Communion" those who should not be admitted (like Pelosi, Biden, Cuomo and others) are themselves "obstinately persevering in manifest grave sin". They are against the Church.
So the blame here rests, not on the Church (which teaches the truth) but on those who are objectively in the position of defiance and disobedience on this point.
It's truly a wretched situation --- a comprehensively offensive situation of the worst kind --- but the wretchedness is that of these disobedient clerics, and not of erroneous teaching on the part of the Church.
It's akin to the scandalous and evil time when, after the Last Supper, one Apostle betrayed the Lord, one denied him three times, nine others headed for the tall grass, and only one of the Twelve was faithful enough to stand at the foot of the Cross.