Let's get serious for a second here. You have to be a complete braindead zombie to find those videos entertaining. I can't believe anybody is wasting their time on these.
"This jaundiced real-estate porn is meant to satirize the housing crunch in cities like Hong Kong and Shanghai, and the commenters are all in on the joke"
I come from a cultural background such that I clued in on this when I first encountered the videos. Is the joke overplayed now? Definitely - but it's not braindead, it's equal parts over-the-top satire and wish fulfilment (if ONLY you could knock out your building's walls and extend your coffin apartment, Kowloon Walled City-style)
Other people have made their own versions [0], which sort of shows all their elements of the meme transplanted into a different context (furry, in this case).