Kingdom values have helped bring radical transformation in society precisely when Christians understood their calling to be salt and light in the public square.
To be a good theologian is to seek to know and rely upon the Word of God better. It is to be a faithful Christian.
The Trinity is not some awkward add-on to God. No, God is beautiful, desirable, and life-giving precisely because He is the Father, the Son, and the Spirit.
The only way the Reformation could possibly not still matter would be if beauty, goodness, truth, joy and human flourishing no longer mattered.