I think there's something to this. But I'd also say the reason it feels so dead is because consumed media has shattered into a million pieces. With the death of broadcast TV and somewhat the death of movies, it's actually getting increasingly harder to find shows with common consumption.

The reason "Bring me a shrubbery" is funny and why people endlessly quoted Holy Grail is because almost everyone in the US watched Monte python at one point or another. Part of what made people do those quotes is the fact that regardless audience, you know you'll get a laugh because they too know the context for the phrase.

I don't think there's a single piece of media like that. Not at least in the last 10 years. I mean, funnily, I think you've nailed Skibidi as a rare exception, at least for the younger generations.