I have little doubt that you sincerely believe you are correct. I would just ask you to reflect for a moment on an alternative.
To the extent that I have discussed such matters with atheists, in the real world and online, I have yet to meet any who harboured an anger against the God they do not think exists. This is true regardless of their route to atheism. They cover the spectrum from those who never believed, never even thought about the concept much, if at all, all the way through to the militant, aggressive promoter of atheism. And, be sure, in the course of seven decades I have met many, across that spectrum.
Perhaps, you may suggest, they were all lying to me and to themselves. Perhaps, but I have benefited in my life from a competence, part natural, part acquired, in ferreting out liars. I imagine there are some atheists who think as you suspect, but they are few and far between.
From this side of the fence your suspicions in this regard look ludicrous. The one saving grace is that most atheists will just laugh at the notion and dismiss your posts with a smile. If they took you seriously they would be simultaneously offended, disgusted and enraged. Let's just hope they are all still laughing.