So, it would be better to remain "blind" - in ignorance of the dogma - like an isolated tribe - and not be accountable (and therefore guaranteed "salvation" and "paradise"), than to possess the "knowledge," and be forced to be so?
There is no choice to remain blind, but no, it is not better to remain blind. There are those who through physical or mental defect who are blind, but for the remainder Romans 1&2 apply whether the message of Christ has yet come to their area or not.
Grace is better.
They are moving the goalposts as they see fit, JCB, making a religion to their own liking, playing gods.
The plain fact is the Church (I mean the Catholic Church) teaches that you must be "in the Church", not necessarily in communion with Rome, but (baptized) and living a Christian life to be saved.
The Protestants believe that no works will save you, but only faith in Jesus Christ as your God and savior, as per the New Testament. Unlike the traditional Church, the Protestants do not consider infant baptism by itself to be salvific because the NT says you have to be baptized and believe in order to be "saved". Since baptized babies cannot believe that settles that. Mormons, on the other hand, baptize the dead and "save" them that way!
However, the Catholic Church also leaves room for those who never knew God, as being "innocent". Thus stillborn and unbaptized babies are believed to be saved by the merciful God (although this is rather new; for the longest time the Western Church believed, but not dogmatically, that such babies end up in Limbo)
Yet, the Bible is clear that only those who believe in Jesus will have eternal life, i.e. be "saved". Period. Thus, stillborn or completely mentally incapacitated babies who die who cannot believe cannot be saved, as per the NT. This is when the "with God all things are possible" get-out-jail card is used to "save" even those who cannot be saved (remember unbaptized babies have the original sin upon them which can be removed only by baptism, and sin = death, so therein lies the rub).
So, chances are you will get as many answers as there are believers. Each will shape their belief according to how they feel and what they are comfortable with. Which in itself makes anyone who is searching or doubting pull his hairs out. The impression is that there are as many Christianities as there are Christians.
But you run into the same problem with the other monotheistic religions, Judaism Islam, Mormonism, Jehovah's Witnesses, etc. Every one of them is shaped and asserted according to how each individual member sees things subjectively or, as they would say, spiritually.
Firstly -- as I said, they are not "guaranteed", we just don't know. Secondly, you can't change positions with them (neither can I or anyone else), so it's moot like asking whether it's better to be born black or white or Chinese or San -- you can't do anything about it.