Since these conveniences by becoming habitual had almost entirely ceased to be enjoyable, and at the same time degenerated into true needs,
That isn't true.
You can live without wifi - its not a true need. You cannot live without food - it's a true need.
Rousseau is just a cutural marxist architect, as this sentence quite eloquently points out.
There are many types of needs, not just the physical survival ones..remember Maslows ' hierarchy of needs. And it's not that you can't live without them, it's that your life suddenly becomes less satisfactory without them. In modern times when we talk about life we mean a lot more than mere survival.