Though this is just speculation, It seems more like an attack on Venial/Mortal sin…Something Many protestants have issues with.To accept that there are some sins that do not totally separate us from God flies in the face of the Snow Covered Dung hill. This is because the Dung Hill mentality says nothing we do is good enough, and is a complete insult to God. Not until Christ covers us do our actions matter…
However… if it is possible to commit a sin and it NOT separate us, it sort of means we are not so morally corrupt that nothing we do matters, and thus, the idea that we are complete degenerates, which is a common Protestant theology, no longer holds weight…
However, Scripture says otherwise… Scripture talks about sin that does not lead to death… (Venial) It also talks about a sin that completely separates you from God, with no sacrifice left. (Mortal)
In Any case… there is ample scriptural support for Venial/Mortal sins…
Just my two cents
In Christ