Making use of any scarce resource intended for the poor, while you're rich, because it's so scarce, is beyond backwards... I have trouble being generous and playing devil's advocate because I simply can't see the argument you're making.
The reason someone could say I'm "abusing" it, is because they're scarce.
They shouldn't be scarce, and they're not intended for just poor people.
To be clear, I'm not here for financial reasons. In fact, I would not object to paying more, if it meant putting more in the pot for poorer households to benefit from.
The tax your landlord will pay on their profits, once you move out to a market-priced property, will be adding to the pot for poorer households to benefit from.