Like any movement that was created or survived into the social media era, you cannot say that a whole movement 'spiraled' into anything.
You cannot shit Feminism because some Feminists think that freebleeding is righteous, or all men are rapists. You cannot say that "Feminism spiraled into misandry".
Just like that, even if some of the "New Athists" have legitimate Islamophobia, that doesn't invalidate the whole movement.
Any and all criticism of Islam and Muslims tend to labeled as Islamophobia. That shouldn’t be the case.
And if you are an actual athiest, you should see fault, although in various degree, in all religions- bar nore.
If you limit your criticism to only some religions, you are painting yourself as a hypocrite.