[Ruined]

I'm not sure what the argument exactly here is about, but one thing to keep in mind about interlacing and artifacts is that standard DVD is much, much, much harder to deinterlace than HD DVD or BD. An HDTV might display lots of artifacts on SD DVD and display none on HD DVD and BD. That is because HD DVD/BD is stored 1080p24 native on disc, while DVD can be a mix of 480i/p content and also because of this cannot have the full frames natively streamed off disc like HD DVD/BD. So while DVDs can be a mess of fields and frames that results in a jumbled interlaced signal, HD DVD/BD always get a perfect interlaced signal since it is created by the player from pure progressive material stored on disc (or it is a true interlaced signal to begin with in the case of some nature docs).