At least with Pokemon you've got a much broader appeal, and the output has been so seemingly consistent for years that a Poke-fied image of anything is pretty much a given - especially with a dedicated board. And mind you, other vidya that enjoys popularity on /v/ can generate similar results, like Risk of Rain. So I don't really feel the same way.
By contrast, how big of a scale do horsefuckers still actually continue to do this today? I'd imagine /mlp/ is a lot more insulated today.