Stating an opinion as fact does not make it fact. Opinions are not fact. So don't be stupid and make a fool of yourself by trying to pass off your opinion as fact.
Unless your asking about LFR, than no you don't need to kill Normal or HM Sha of Fear to get into Throne of Thunder.
I honestly wouldn't like the idea of having to clear the previous tier's end boss. I remember they used to do that, and I hated every bit of it. However, since 5.0 raids will be cross-server, to be honest I don't think it would be that bad if they did do that. Not that they are.