Strong atheism is, in fact, a religious belief: claims of the non-existence of gods are no more falsifiable than claims of the existence of them, so in order to “know” there is no god one must have faith.
In other words, if religion is the faith-based belief in N gods, where N = many for religions like Hinduism and N = 1 for religions like Christianity, strong atheism is simply the religion where N = 0.
Meanwhile, scientific skepticism/disbelief in god(s) due to lack of positive evidence is more like agnosticism/weak atheism.
Strong atheism is, in fact, a religious belief: claims of the non-existence of gods are no more falsifiable than claims of the existence of them, so in order to “know” there is no god one must have faith.
In other words, if religion is the faith-based belief in N gods, where N = many for religions like Hinduism and N = 1 for religions like Christianity, strong atheism is simply the religion where N = 0.
Meanwhile, scientific skepticism/disbelief in god(s) due to lack of positive evidence is more like agnosticism/weak atheism.
Edit: see also: https://en.wikipedia.org/wiki/Negative_and_positive_atheism
Edit 2: I genuinely don’t understand what the downvoters are so upset about. Could some of you please reply to explain?