What he, the original guy that said it did not happen, is not saying is that the earth is only six thousand years old.
You or he are welcome to believe that if you wish.
I prefer to go with the actual evidence, thank you.
Of course, Rev 6:12-17 and Rev 16:17-21 mentioning every mountain and island being shaken and later not ever found again, indicates God’s Judgment and wrath might very well dwarf anything we might anticipate.
Since He also operates today out of grace, and warns those who have not yet received Him of the dire consequences, it would be consistent in His grace to make an example of those who have become aware of Him, but have turned away, especially if a Great Tribulation is so approaching.
As the Day of the Lord approaches, IMHO, His grace might allow complete destruction of those who have completely turned away from Him, especially if they have promoted measures to prevent others from returning to Him.