Well, at least he's grounding her for good reason. Some shows are not for kids.

Lavender should not be grousing so loudly because there are households where the kid is sent to the corner with her sore derriere visible. Having just said that, though, Lavender's grandpa would be wise to have taken the tablet away from Lavender and explained to her why the vulgar speech of that video is not a good social practice. Let the punishment fit the crime; in this case, there is no crime -- only ignorance. If Lavender had fired back at her grandpa like in that video, then yeah, there would be an argument for this.