Secular State Atheism is a term used to describe a situation where the state is "secular on paper and state atheist in practice", where the laws of the state are still secular but the government uses of state atheist politics and often promote atheism, more specifically, New Atheism, and the state often support atheists and seeks to support atheism, scientism, physicalism, materialism and so on, but the state is still secular but it's on the first steps on becoming state atheist. Secular State Atheism can be used to describe the transition from a secular state to a state atheist state just as on Cultural Atheism or can be used to refer when atheists have so much influence over the state and start use of the state and politics to promote atheism, or even when the state start supporting new atheists and their actions and use of their politics and ideas as their main politics. Besides the "secular on paper and state atheist in practice", secular state atheism often doesn't advocate persecution on religious, spiritual and esoteric people, but it often seeks on criticize and attack them and often use of the state apparatus as a mean to de-legetimize religion and spirituality and often seeks to use of religious and spiritual people to protect the secular state atheism, so it's basically a moderate form of state atheism where it's still secular but it uses of some state atheist politics and some pro-atheist politics as well.
"Secular State Atheism is basically what majority of the spiritual communities online actually support, mainly the "spiritual but not religion" and mindfulness ones. And secular state atheism is just some steps towards become full state atheism."