[Luircin]

Setting aside your argument by popularity fallacy, you’re arguing against your own concept of God by allowing all those filthy non-Catholics to exist.

[MurphsLaw]

The fallacy you do not understand is that God does allow for false teachers and false Gospels. Been that way from the start.
Thats why the ORG has been needed to combat heresy that continue to attack... and not just let them alone, and just lie like dogs.

Scripture does warn us:

3 For the time is coming when people will not endure sound teaching, but having itching ears they will accumulate for themselves teachers to suit their own likings,
4 and will turn away from listening to the truth and wander into myths.

Do you not see how modern Christianity embodies that which we we were warned about?