The Dead is not a brand. Pepsi is a brand, one umbrella for multiple products. If I take Mountain Dew and stick in a Cherry Coke bottle it doesn't make it fine because they are Pepsi products. Sideshow Originals is a brand just like Marvel, DC, Lord of the Rings, the products produced within those brands support it.
The Dead is for Zombies, 50 results in the Sideshow site alone to support that. Suddenly throwing a Grim Reaper in there and calling it The Dead doesn't make it so.
This isn't a Dead piece unless Sideshow takes the time to tie to the established storyline plain and simple. It's like releasing an SSC Frankenstein under The Dead brand just because they are horror based.
If that doesn't matter to you fine but that doesn't mean you have to argue or even discuss people into seeing otherwise because it ain't happening.