You think that because a) you don't know the origin of the intentionally incorrect usage of "Democrat" as an adjective, and b) you're confused about the differe

You think that because a) you don't know the origin of the intentionally incorrect usage of "Democrat" as an adjective, and b) you're confused about the difference between an adjective and a noun. The usage in that domain name is as a noun. "Joe is a Democrat" is fine. That's a noun. "Democrat politicians" is not fine. That's an adjective.