Plus the fact , no “ bad “ pope taught anything differently from those who led holy lives. They didn’t convene a Synod to become more human about fornication and legalise adultery..like the Episcopal Church in the Anglican Communion. Or how Evangelicals have accomodated themselves to divorce, contraceptioin and masturbation.
Even the 39 articles agrees that the unworthiness of ministers does not invalidate thier sacramental ministrations.
Far from disproving Catholicism, the six or so bad popes prove its indestructibility and the hand of God .
As for ken’s post Constantine apostasy theory , it falls down on historical and Scriptural analysis..some non- christian groups like the JW’s believe that a false religion was started by Constantine which teaches that Jesus is God. Some Jews claim ithat this is when Jesus was deified, with the taking on ideas of anthromorphic Greek and Roman mythology.
It is all rubbish...as are kens claims .....the doctrines ken objects too can be found centuries before Constantine...baptismal regeneration, the Eucharistic sacrifice,the real presence,prayers for the dead, confession to a priest, the rule of bishops,icelibacy,nvocation of saints, belief that the Bishop of Rome was the successor to St Peter. ........to name but a few.
The Church did incorporate a few pagan pracices , which did NOT conflict with Christian teaching..the wedding ring, pagan festivals , pagan temples etc were changed into Christian ones etc.
Thats why Sydney Anglicans inherited from us and celeberate Easter and Christmas. However an infallible Church knew how to do this.
However those hat did contradict, like infanticide, abortion, homosexuality, crucifixion,divorce , worship of false Gods, temple prosttution,etc were driven out.
However by contrast in the centuries prior to Constantine we cannot find the preaching of justification by Faith alone, a settled Canon of Scripture, a loose anti-hierarchical congreagtional church system, infrequent communion services with grape juice etc
The onus is on Ken to show continuity for his beliefs , but he cannot. The earliest recorded material shows Church Fathers warning against heretics who deny that that the Eucharist becomes the body and blood of our Lord Jesus Christ!
The answer one sometines gets is a catch 22 one. “Oh the Cathoic Church destoyed all th eeveidence and tampered with the sources.”..which oddly is the reaction some Mormon missionaries recently also gave me!