The author is illiterate. They are not adjectives. Anti in the sense used is a preposition. For instance anti-Rinoism is not an adjective. It is a political philosophy (which is a noun) opposed to the practices of low life humanoids who make a living selling their souls for pennies on the millions of taxpayer dollars doled out while calling themselves Republicans.
Today, if one can choose to be what ever gender they “feel like,” I suppose that one can choose what ever grammar or lack thereof they wish to use. Of course, both choices render the person and message unintelligible.