Anyway, I understand. Valid points. I am more concerned with stuff like the compression and noise removal artifacts in some of the previews, not to mention that it feels like some of the same previews have been rehashed over the years, and some times don't show much increase in quality. But the ESB Grindhouse release and the recent stills eased some of my worries, as it shows they are capable of higher quality than their earlier previews let on.
I guess I misinterpreted it as a criticism of their general opacity, and/or their lack of transparency on their cleanup/encoding processes.