I read. I read a lot (no, not “alot”). When I see words like “backseat” (an adjective) misused in place of “back seat” or “backyard” (also an adjective) misused in place of “back yard” (the noun phrase: “yard” n coupled with “back” adj)–as well as other, similar misuses of one word form for another–in published works that have been through a writer’s hands, an editors hands, a number of proof readers, etc., and still been published in a book that’s sold well, even become a best seller, then I know we are truly becoming a nation of very nearly aliterate subliterates tending toward illiteracy.
And that’s just common misuses of the wrong forms of words. Using inappropriate words (see Inigo Montoya) or stupid grammar is even more common… and worse.
What’s almost amusing is that the most recent example I have read of “backseat” misused in place of “back seat” occurred in a book where a primary character kept correcting others’ grammar and spelling. I almost laughed. Almost.