Given the partisan vitriol he spread today I hate to defend this but:
There is a 99% chance that after the by-election, he will once again be the leader of the opposition and therefore live in that house again.
So with hubris and laziness he is saving our tax dollars by not having to pay for him to move twice in less than a year. Andrew Scheer gave him permission for this as well.
I didn't watch the video but the headline is clickbait and this is a nothing story.