Ok hear me out faggots, but as of today, we can comfortably say that GF has retconned megas out of GEN VII.
They finally fucking realized that the concept never made sense in the first place and that we all realized that it was only a new way to sell toys. It was an abomination, it needed to stop. Fuck, even the supposed syncro evolution makes more sense than pokemon fucking reacting to never-heard-before stones to become stronger.
Plus the all thing was executed badly and it killed cross gen evolution besides the promotional eevee, which is an unforgivable sin.