Uh yeah, that makes him an agnostic atheist level 6. Same as literally every atheist living right now. The only further you can go is to be level 7, which no one is. This grading system is outlined by Richard Dawkins, if you care to look it up.
Einstein was as much an atheist as any of us are. The distinction he made was from atheists and anti-theists. He calls them "the professional atheist." This only means he didn't feel the need to contribute to education on this topic, not feeling the need for himself to help eradicate religion. It says nothing as to whether or not he believed that religion was good or bad, referring to the dogmatic institutions. And it certainly doesn't mean he thought it was possible that the God of Abraham could exist.
Einstein knew full well that any supreme intelligence or remnants of such a being are too far beyond our human abilities to understand. That no current human theory could be anywhere close to accurate. That's what he was talking about when he said he prefers an attitude of humility.
Oh and, as long as the parties of God want to infringe on free society in this world, this debate is always called for. What's more, Einstein has been misrepresented so thoroughly by your kind, that he needs the defense.