Jesus, this is tiresome. People say this (you’re not the first) as though it’s some kind of surprising new discovery. It is fucking obvious that gene expression constantly changes in response to the body’s needs. Do you imagine that all genes would be constantly switched on at the same level of expression producing exactly the same quantity of whatever it is they make? That’s idiotic.
99% of the field of epigenetics concerns mechanisms that routinely modulate gene expression in somatic (non-germline) cells, and any “inheritance” that we’re talking about there concerns cell differentiation, the passage of epigenetic modifications down differentiated lineages of somatic cells. Liver cell mitosis producing more liver cells. Not anything heritable in the evolutionary sense into the next generation.
There is a much narrower subfield called transgenerational epigenetic inheritance, and only this part concerns the transmission of epigenetic modifications via germline cells into the next generation. Although this is a real phenomenon, it’s importance has been massively overhyped. Virtually all epigenetic modifications are wiped in germ cells. There is no evidence that inherited epigenetic modifications can persist for more than a few generations (and rarely more than one), and no evidence that is has any significance in evolution.
The amount of snark is absolutely justified when this has been patiently explained to Honeybadger more than once*, when he completely ignores it because it doesn’t suit his preconceptions, and when he invetiably returns a few weeks or months later to spout the same ignorant nonsense.
*see here for example: