I personally think this is a new breed that they might be going off assumed genetics than actually seeing what the birds are. If you noticed, there's no pictures of what the adult bird is supposed to look like. They might have never raised these birds to adulthood to see what they're actually like.I didnt read it but that it saying silkied is a lie then first gens wouldnt be silkied at all!! Unless it was a split silkied bred to a silkie but thats further away from easter egger.
Again, for anyone interested in getting these birds, it might be best to breed them oneself, so you know what you're actually getting and can breed accordingly. It'd make for a fun project and not be messing around with a hatchery who might not be selling you what you think you're getting.