It absolutely is. Grok specifically. The phrasing on the poster is a dead giveaway, it puts that pentameter on everything from book covers to posters to roadsigns to neon wall lights. Plus it obviously fucked up the hat and the poster went in and edited the text onto the hat to be readable because you can see the edges of a not blended blue box background.
And I hate that I know all that at a glance because there's so much Grok shit out there everywhere