Unfortunately, the Trinitarian God is just not explicitly preached that often from the pulpit of the church militant. Could it stem from mist in the pulpit on solid knowledge of the doctrine? I just don't know. I fear that the mystery of the doctrine of the Trinity has become an excuse to avoid digging deeper.
I think this is correct. In my hometown, the largest religious center is United Pentecostal. I used to be a member of a congregation of the OPC there. The pastor was dismayed that older members would just shrug off questions about their children (most of whom had been raised in a more or less confessional Presbyterian church) attending this UPC organization with comments like "It's the same Jesus." Confessional congregation or not, if this truth is not preached consistently, people will not be able to discern truth from error on the subject of the Trinity, or other subjects for that matter.