For me, it's a bidet toilet seat. I bought one that didn't really fit as well as I hoped, so now I am shopping for a v2 based on experience. I don't want to live without one going forward. That's for sure.
I think he's joking that they just don't clean their house.
An added value of smart vacuum is just that it simply does the cleaning regulary without slacking so there's overall less dust in the apartment hence you not only don't have to vacuum but also dusting off furniture etc. is required less frequently.