Religion

one assumes a whole host of factors go into it.

It probably depends on how much property taxes are, vice how much their overhead is, vice what the going rate is for that kind of property in that area. I'm pretty sure it's not a direct one for one, and I'm pretty sure in some cases, the property taxes are low compared to other costs and may not be a huge consideration for a landlord. I also know that often the landlord isn't even local for rental properties so all they care about is some level of profit per unit. I also know that in some cases, the property taxes could easily be low enough that for having 100 units, the rent from just a small number of units might be enough to "pay for the property taxes" and each other unit is simply excess. Or I could sign a short-term six month lease where my rent isn't needed to cover property taxes but covers some other expense. They don't calculate down to the person some "percentage" of each expense, because they don't know how many people will necessarily rent in any given year. So there's no "guarantee" that my specific rent is contributing to paying for that, vice contributing to paying for some other cost. I could also be paying a promotional rate. My first year in my apartment I got two months free rent to start. I ain't contributing a dime to property taxes those two months, and my reup had a free month's rent, so I ain't contributing a dime that month either.

Or I could be "renting for free or a significantly reduced rate" from a friend or relative. I could be subletting for a small cost. Regardless of my situation, I get police and fire protection, they ain't ordinarily checking to see if I've contributed to the owners portion of their property taxes or not. I've seen a couple of examples of that going on with privatized fire/police, where if you haven't paid, they may not respond, but not with government services. And if you want to go all the way, the homeless are due police protection, and people in homeless shelters are too.

But to argue that I "pay property taxes" because I rent thus I am not getting some benefits for free is again specious to this particular argument. Because the argument here is, if you don't pay taxes, you shouldn't get any benefits. There are literally a half dozen examples of that blatantly not being true...whether you are talking renters, or if you want to argue indirectly, then people staying with friends, or family, homeless shelters, or paying promotional or reduced of "friend/family" rates that don't cover the cost of property taxes for at least that month or even for the entire rental period.

You are trying to create this category where churches are a grand (and in your opinion) toxic exception to tax exemptions, and the evidence simply does not bear that out.