Most of what nu/co/ considers "good comedy", ie what you see in Gumball, Adventure Time, We Boring Ursidae, TTG, or whatever other relatively new (and usually Cartoon Network based) cartoon, is shit for brainlets like referencing anime video games or internet memes, often in an obnoxious and unsubtle fashion. The Loud House's most unsubtle reference was loss in the background of a scene, and just that, a background, no character drawing attention to it or it being placed front and center on the camera like what you would see in Adventure Xime or Screamball.
Loud House gets most of its humor by playing its characters off each other other. Brainlets tend to think that every character needs to be deep and have a secret backstory where they were abused by mommy and daddy or something, which is why "one dimensional" is levied as a limp criticism against TLH characters. In reality, they are all different cogs in a bigger machine that work together and create fun situations and plots, which is why the cartoon has been so successful. Pico brainers cannot grasp this and just say its successful because there are a dozen or so autists posting lewd shit on the darkest corner of a dying imageboard.