Whether baptized at childhood or adulthood is irrelevant. One has the ability to reject their faith once they become conscious of such issues.
A person who rejects the Church's teaching isn't likely to follow it in this matter. But a Catholic is obligated to baptise the baby. It is a matter of spiritual care-taking.
It is the spiritual parallel to feeding, bathing, clothing, and loving the child. In fact, it is the expression of it.
Parents who don't see this are a bit more concerned about their own beliefs that either their child's or the Church's, and, frankly, they are either ignorant (for which charitable allowances can be made) or frighteningly self-centered.
Yet in the original post the RCC scholars all got together and couldn't make a decision about Limbo. Neither, yes nor no. Do Roman Catholics believe in actually FOUR places a soul could go to now? Heaven, Hell, Purgatory and Limbo? Show where the last two are named anywhere in scripture.