Your vain unscriptural assertion is a poor substitute for a valid argument. If mere unity is the basis for for determining validity then certain cults win the prize, while whatever unity Rome can claim is very limited and largely on paper. For the basis for determining what what one truly believes is upon what one does and effects, (Ja. 2:18; Mt. 7:20) and and in real life "the Holy Catholic Church" exists in divisions, being a mixture of variegated beliefs, with your brethren even including prohomosexual, proabortion public figures as members in life and in death, and those that elect them are the near majority. These are your brethren and you must own them, while for that reason alone we come out from among them in obedience to Scripture, while in addition Rome is critically unscriptural and has become as the gates of Hell for most of her multitudes.
The fact is that real division is seen under both the Roman model as well as under SS, while the limited unity of the NT church was not based upon the Roman model, but was a result of establishment of authority by Scriptural substantiation in word and in power, and was under such manifest apostles of God such as we do not see today, and Rome's so-called apostolic successors even fail of the qualifications and credentials of manifest Biblical apostles. (Acts 1:21,22; 1Cor. 9:1; Gal. 1:11,12; 2Cor. 6:1-0; 12:12) Meanwhile, those who hold most strongly to the authority of Scripture are yet the most unified in basic (conservative) beliefs, evidencing the basic unity of Christ in them and they in Christ, (cf. Jn. 17:21) thus both devout RCs and the world treats them as their single most manifest threat.
In addition, the charge of chaos (a most manifest formal example of which was Rome for a period during the 14th and 15th centuries) depends upon a definition of "Protestant" that is so broad as to be basically meaningless, while SS affirms "it belongeth to synods and councils, ministerially to determine controversies of faith." (Westminster Confession) But not as possessing the novel and unScriptural premise of ensured perpetual magisterial infallibility, which is unseen and unnecessary in Scripture.
If you would like to debate these then do so.
And under the Roman model, in which the one duty of the flock is to follow the pastors as docile sheep, means that when leadership goes South then so do those who follow them, unless they essentially become like evangelicals, and ascertain the validity of teaching by examining the basis for it. In contrast, liberals manifest they can feel quite comfortable in Catholicism versus evangelical churches. Certainly our scope of disagreements and lack of centralized organizational leadership is a problem, but it is not one Catholicism can solve, for her declension required division, and you can hardly expect Bible Christians to join your unholy amalgam and with its unScriptural inventions.
Enjoy Your Journey, I Will Pray for your Soul and those you infect.
God Bless