I disagree most strongly, and your analogy is flawed.
If you are a Christian, you can and should train your children to be Christians. They may reject the Truth at some point but you, their father or mother, are absolutely required to teach it to them.
Visiting a garage, once, doesn't make you an auto mechanic. That comes with teaching and learning. Visiting a church once doesn't make you a Christian. That comes with teaching and learning.
Matthew 28:16-20 begins at home.
Train up a child. This does NOT guarantee they will become a Christian, unfortunately. There is still free will.
Are we supposed to train up a child? Of course. But EXCPECTING some thing to happen the bible does not say is wrong.
Note, in Revelation, we are waned to take nothing away from scripture OR add anything to it. This is why “systems” of belief like Calvinism are wrong. The bible does not need any “help” what it needs is people to take it as the living Word of God and stop adding or subtracting from it to suit our own ends.
“you can and should train your children to be Christians”
I disagree.
yes your following sentence trys to give correction, but this sentence above as you wrote it, is incorrect/unbiblical.
it needs the word “like” before “Christians”. without it, you are stating someone can make some one else a christian.
“Visiting a church once doesn’t make you a Christian. That comes with teaching and learning.”
teaching and training does not make one become a christian.
it’s an individual choice involving the person and however the Trinity of God chooses to present itself to that person in a way they can no longer resist. May take a lifetime or may take a few seconds. God gets to choose.
but yes, churches have become big business with all it’s teaching and training while millions still hang onto portions of their old self, as do many preachers.