It is, because practical science is involved.
Epigenetics, was not discovered as a means to substantiate Evolution.
It was looked at to try and understand how genes change expression within the lifetime of one person, and what caused those changes.
When it was first found in the 1970s, scientists thought that these genetic “tags” were not hereditary; as soon as a baby was born, the slate was wiped clean.
Turned out this wasn’t true, some of these tags are hereditary, and if consistent over enough generations, it will change the genome. This has been observed. That’s neither an exaggeration, nor conflation.
It greatly impacts human disease and your chances of exhibiting it. Diabetes and cancer are both affected by it.
And once again, it’s also responsible for racial differences. Changes in diet, activity, and climate, molds the genome. That’s why we look different, and have genes that are different from one another, despite all of us descending from the same ancestors.
That’s why isolated populations of closely related birds in the Galapagos have different beaks. That’s why a lake that started with one fish species split into two.