No, but the landlord has those too. Or at least, some landlords have them.
So, you have the landlord having mortgage costs, maintenance costs, insurance costs, and still wanting a profit. And you have the homeowner, having mortgage costs, maintenance costs, insurance costs, but getting to keep what would have been the landlord's profit.
So, you have the landlord having mortgage costs, maintenance costs, insurance costs, and still wanting a profit. And you have the homeowner, having mortgage costs, maintenance costs, insurance costs, but getting to keep what would have been the landlord's profit.
So the GP still has a valid point.