The problem with that is, I don’t know any reason why I should believe God has not done anything for them.
Also, by what the Bible tells, all modern people are offspring of those who were in the ark. They knew God and then later many of them have rejected God, should God force His message to those who don’t want to hear?
Jesus was sent to declare forgiveness, I think it has worked well this way also. but, the main point is to be, or to become righteous. That is possible, even if one has not heard of Jesus yet.
These will go away into eternal punishment, but the righteous into eternal life.
Mat. 25:46
For the wages of sin is death, but the free gift of God is eternal life in Christ Jesus our Lord.
Romans 6:23
People who have not heard of Jesus, can be counted righteous by this:
For as many as have sinned without law will also perish without the law. As many as have sinned under the law will be judged by the law. For it isn't the hearers of the law who are righteous before God, but the doers of the law will be justified (for when Gentiles who don't have the law do by nature the things of the law, these, not having the law, are a law to themselves, in that they show the work of the law written in their hearts, their conscience testifying with them, and their thoughts among themselves accusing or else excusing them) in the day when God will judge the secrets of men, according to my gospel, by Jesus Christ.
Romans 2:12-16