Technically, yes, except eliminate both the Domestic Dye and the Imported Dye. Which is what they've done. The general purpose, pure, and metallic dyes are not being consolidated because that would affect the marketboard and the cash shop.

But then imagine a world where instead of consolidating the dyes, we had this patch note instead. "More dyes are now available from all dye vendors, including crafted and Allied Society dyes." And of course, not the general purpose dyes. This change would probably be popular and fairly inconsequential. And I think that's an intentional side-effect of this change. The designers maybe did internally start with what you had before realizing that Custom Dye/Association Dye/Union Dye was something they actually didn't care about once they examined it.