Mixes like "Games that treat GOG users as second class citizens" were really good for detecting anti-consumer practices from a glance at the store page. I have to wonder if this isn't part of why they have been removed, years of work maintaining those lists flatly deleted. Simply to please publishers and keep buyers confused and buying multiple copies.
Oh please, there's no need for silly theories like that. They simply did it because GOG Bear told them to.