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.
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.