I can understand your frustration. With all the things that are legitimately wrong with Vance, making fun of the whole 'couch love' thing seems rather silly.
But, on the other hand:
- There have been plenty of legitimate criticisms of Trump made over the years, yet the MAGAchud cult seem to dismiss them.
- The MAGAchud have also been eager to embrace their own "made up" memes targeting Democrats (such as "Michelle is a man", "Obama is from kenya", etc.)
Maybe doing things that mock vance (such as "he wants to replace the couch in the oval office with a "love seat") will have more of an impact on republican electability than pointing out real, legitimate flaws.
Remember, the democrats seemed to have some success (meaning an increase in poll numbers) when Walz was able to bring in the phrase "weird" to describe Trump/Vance.