I do get the basics, which is that all those alive in Jesus Christ are His Church, and that includes Christians who are not in full fellowship with the RCC through adherence to false doctrines based on the "traditions of men".
Lets face if RomeSweetHome, the first official Roman Catholic Pope took that title and the title Vicar of Christ in the 7th Century.
You state that none of your traditions void God's truth, yet the immaculate conception voids God's truth, as does the perpetual virginity of Mary, purgaroty, and .etc.
The community of Catholic churches cannot establish the validity of many of your traditions using the Bible and have developed these traditions over time by denying the Hebrew foundation of Christianity and adopting Greek wisdom (gnosis) as your primary religious philosophy.