It's really an issue on both sides.

You have the shitty landlords, the bad apples of the barrel, who jack up rents and only care about getting as much money as they can at the cost of their tenants' living conditions, health, and well-being.

And you have the shitty tenants, also bad apples of their own barrel, who violate leases and are generally just assholes when it comes to dealing with landlords.

So I'm not really surprised at this statistic.