I guess he is technically not lying when he says, "I'm definitely dead.' Well played Kit.
"I love that show and I love that it's done what it's done, and it will follow me a lot longer than just this year. I can't fight against that."
That bit was odd though.
I am guessing he meant that probably he will always be known as Jon Snow for the rest of his career (?) And that possibly any other part he plays will not be more well known then that??? It is odd phrasing.