No. Here's what he could've done to not be a leech.

• sell the property

He no longer uses it so selling it to someone who would use it would be the best option. But maybe he's sentimental about the place or has some other reason to keep it. Then it's better if he "rents" it out.

• Get tenants but have them only pay for the utilities they use,no rent is paid.

He chose to keep the house, the mortgage on it is his responsibility not the tenants. Even if he just asked the tenants to cover the mortgage that is already leeching because you're not using your money to pay it off, you're using someone else's. Once the mortgage is paid off he has a property he didn't pay for while the people who paid got nothing. But let's say he can't afford to pay the mortgage but he still wants to keep the house?

• have the tenants pay thy mortgage as well, but nothing more.

Again, it's his property whatever patch work it requires it's his to cover. He's already offloaded his mortgage to the tenants, why demand even more from them? But let's say the tenants are scum of the earth and every day they tear the property apart, having the also pay to cover the repairs would reign them in.

• give back the money he took for repairs but he didn't use for repairs.

He's offloaded the mortgage on the tenants. He's offloaded the maintenance cost to the tenants. The least he could do is give back the maintenance money he didn't use. But he doesn't even do that.

And yet, according to you, we're supposed to think of it as him doing the tenants a favor because he's not ripping them off more? Do you think a wife beater not beating his wife every chance he gets is doing the wife a favor? Do you think the slave owner not whipping their slaves is doing them a favor? Absolutely asinine.