I didn't know that so many people used it, I thought we were like 50-100 forum goggers max.
Anyway, sadly your protest only negatively affects the users. I doubt that Gog's managers are even aware of Magog.
But well.. it's your creation, so we can't do much. : ( (btw, that's why I'm never too keen about user-maintained tools vs community ones, as they're completely dependant on their unique owner's whim)
They're aware, as they are of the community, the shreds of it left here as well as those that left. They just don't care, or definitely not enough to reconsider their chase for growth and the mainstream masses at all costs.
And while MaGOG's legacy mode definitely causes me issues, still being around here, way I see it, that's my problem, specifically because I'm still around here while by all accounts I should have joined those leaving long ago. So, yeah, no longer supporting users of GOG who obviously are still here and therefore in some way still supporting this GOG as it is now is rather the point, I'd say