In the zeal to condemn Atheism, some begin with the fallacy that Atheism is a religion. Atheism is the lack of religion.
There are Atheists who support Capitalism, the free market, the right to believe in whatever religion people choose, that America is exceptional, that the national debt is an abomination and that American needs to have secure borders and a strong defense.
Stop painting with a broad brush.
BTW, I do agree with you - atheism isn’t a religion. There are atheists who possess somewhat of a zeal that borders on religious zeal, but that zeal still doesn’t mean that atheism is a religion or that this zeal can be transferred to it to give it religious status.
In closing, Ayn Rand was an atheist, and yet there are some who (unlike me) actually agree with her view that selfishness is the highest virtue - and she was an advocate for economic Darwinism to boot.