Yeah. I think the additional trick is that squatters often have a fraudulent lease. That makes it owner vs. tenant, and the police have orders to err on the side of not facilitating an illegal eviction. The owner could attempt to owner-occupy the property, but there's no document for that and there is a lease. So when the police show up, the owner is very likely to be the one removed or arrested.

The sword guy makes it tenant vs. tenant, so neither party has that formal advantage. Of course the police know the game, but they're generally happy with the workaround.