Very, very few people still believe that the Earth is only 6000 years old. The vast majority of Christian denominations have rejected this view because there is no rational or logical way to ignore the mountains of scientific evidence to the contrary. These denominations have conlcuded that their interpretation of the Bible was incorrect.
The response to your statement is that nobody really cares that a small percentage of irrational people believe that the Earth is only 6000 years old.
DITTO!