Epigenetics may influence gene expression, but as your link says others are skeptical that it constitutes an independent information vector. Epigenetic activities may themselves be encoded in genes.
Epigenetics as a concept can also be abused into a sort of neo-Lamarckism.
>Epigenetic activities may themselves be encoded in genes.
But good luck growing a healthy organism without its epigenetic landscape properly initialized
Has it been verified experimentally that it's not possible?