True, but then more time goes by and real historians eventually tell the truth of what really happened as the partisan tensions which glossed over the truth at the time dissipate over time.
Eventually, the real, full truth comes out. It doesn’t matter how hard to try to hide it. (think of Jeffersons slave children)
The Sally Hemmings paternity claims are by no means settled. Randall Jefferson is a far more likely candidate than his older brother Thomas.