What you have failed at, time and time again, is to provide any answer at all to what is going to STOP the inevitable genetic change in a population that is a result of the absolute impossibility for a living system to copy DNA with 100% fidelity.
DNA change in a population will occur continuously over 2 years, 20 years, 200 years, 2,000 years, or 20,000 years, 200,000 years or 2,000,000. DNA change in a population never ceases, because DNA cannot be copied with 100% fidelity.
So what is going to STOP this inevitable and inexorable change?
And again, the big question you have failed to provide any answer for time and time again.....
Why would bacteria have an lower fidelity DNA polymerase that is expressed during times of high stress?
“what is going to STOP the inevitable genetic change in a population that is a result of the absolute impossibility for a living system to copy DNA with 100% fidelity.”
The best answer is what I’ve given—that you have no empirical grounds to claim that continous, intra-species change will occur based on the observation that change has been observed in discrete instances within a single species.
But a more concrete answer is that genetic change has a negative feedback effect on reproduction—too much of it will cause inability to reproduce and therefore the particular line of genetic change reaches a dead end.