I just disagree with this sentiment.
The idea that being a 'gag verse' immediately disqualifies it from discussion and/or consideration is both arbitrary, and unnecessary. The context of the show being based on gags is what
specifically allows for crazy feats like Spongebob carrying the ocean as early as episode 1b, or rotating the planet just to pick up litter later. Someone somewhere is eventually going to think about these kinds of things coming up, and even as a joke think 'damn that was kind of crazy he could do that.'
The 'meaning' of a gag series being primarily about humor also doesn't change much: There are plenty of primarily 'serious' verses with humor/gags interspersed constantly into or surrounding action/feats. There are plenty of moments in One Piece where Luffy wildly exceeds the expectations of his opponents and/or onlookers to humorous effect, or similarly does something incredibly unorthodox in the face of what is expected that either directly works to his advantage, or indirectly does due to how derailing it can be for his opponent (also sometimes to humorous effect).
Serious verses can also have parodies that bring humor to the serious verse abroad while maintaining the integrity of its power. For this, DC comes to my mind: Namely the insane power level of Doom Patrol in both the TV series and Comics despite how much humor (at least within the TV series) is used. More relevant to parody, the Harley Quinn animated show parodies plenty of popular DC characters and norms through how they are typically or subversively portrayed, the jokes not just being 'x character is weaker here.' The show often involves obscure characters with otherwise absurd power levels or hax like
Queen of Fables as well to show the absurdity of power both in the parody show, and outside it in the more 'serious' portrayals of the verse.
Overall, I just think we should treat them as we do other characters/verses regardless of whatever 'box' we could put them in with regard to genre or 'seriousness.'