Maybe: even many homeowners neglect their properties. This may be through issues like poverty, poor attitude, and frequently old age / infirmity. Although I would generally agree that a person who owns the value of their home will on balance be more likely to care for it.I would add that it is likely better for the houses as well, having those immediately impacted by disrepair be responsible for maintenance.
Although as experienced in the UK, landlords have also found all manner of interesting ways to pass costs onto their tenants. After the Grenfell fire, for instance, it turned out that lots of landlords owning potential deathtraps tried, and in at least some cases had the right, to pass the cost of improving it in part or full onto their tenants. Thus the absurdity of expecting people on the breadline to pay tens of thousands apiece to make their homes safe (with their landlord enjoying the increased asset value). The government passed legislation to minimise this, although there are loopholes that still allow some landlords to do nothing or pass those costs onto their tenants.