That is simply a baseless premise.
But even if God parts the Red Sea few believe it. If He feeds 5,000 people crave for more food. If He raises from the dead we remain skeptical, refusing to believe. So what point is all this?
Because some do believe based on evidential warrant, as God gives grace, revealing His nature, while as with preaching which is also overall rejected, the spurning of God's grace testifies to l the hardness of man, revealing His nature, All to the glory of God.
Then Philip went down to the city of Samaria, and preached Christ unto them. And the people with one accord gave heed unto those things which Philip spake, hearing and seeing the miracles which he did. (Acts 8:5-6)
For I will not dare to speak of any of those things which Christ hath not wrought by me, to make the Gentiles obedient, by word and deed, Through mighty signs and wonders, by the power of the Spirit of God; so that from Jerusalem, and round about unto Illyricum, I have fully preached the gospel of Christ. (Romans 15:18-19)
Then began he to upbraid the cities wherein most of his mighty works were done, because they repented not: Woe unto thee, Chorazin! woe unto thee, Bethsaida! for if the mighty works, which were done in you, had been done in Tyre and Sidon, they would have repented long ago in sackcloth and ashes. (Matthew 11:20-21)
It's not baseless. The Israelites walk through the Red Sea and a few days later were grumbling because they didn't have anything to eat. Our Lord Jesus rose from the grave and the Jews decide to make up a story about his disciples stealing his body.
God glory is all around us yet man refuses to acknowledge Him.
Luke 8:10 he said, “To you it has been given to know the secrets of the kingdom of God, but for others they are in parables, so that ‘seeing they may not see, and hearing they may not understand.’