This has been a topic, from before the internet days, so I highly doubt it.
The guy in the video is just looking for clicks. There are and always have been houses that don't sell right away. I see the new strategy by them and the realtor, of putting it back on the market at a low price, to create a bidding war, like the ones that happened before.
Before Covid, there was speculation that the cottage market would "correct" and we've yet to see that happen.