I don't think it has anything to do with his progress, but is a jab at another author who caused some drama in the Romance writer's community.
Some relatively unknown Romance writer trademarked the word "cocky" and is now threatnening other writers who use it in the title of their books with a lawsuit. https://the-digital-reader.com/2018/05/05/cockygate-faleena-hopkins-has-registered-a-trademark-on-cocky-and-is-using-it-to-threaten-other-romance-authors/
Here is also a twitterthread explaining the issue:
Scott's twee reads like he is making fun of this by claiming he will trademark a phrase that pretty much every writer uses at some point.