How can you get more antitheist than declaring that “God is nought in my sight”. I mean sight as a metaphor for thinking.
Well first you will have to help me out with that quote - I've no idea who said that.
And by the way I said anti-theism, not anti-theist - again they are not the same, the former is against the concept and actions of theism in society the second is against people who are theist.
But we are drifting away from the topic, which is atheism - remember a lack of belief in the existence of god or gods (nothing more, nothing less). Being atheist does not mean that someone is necessarily a proponent of antitheism and/or secularism.
And I'd go further - in fact plenty of people who are actually religious and theist are selectively proponents of antitheism (believing their religion is preferable to other religions) and selectively secular as they tend to support the interactions of state and religion only if that religion happens to be their religion, but are against if the state religion receiving special privileges is another religion.