They might as well be Unitarians.
I was raised Lutheran, but not ELCA.
I was LCMS (Lutheran Church Missouri (Misery) Synod). They are more conservative and membership nationwide in a spiraling decline. Young people abandon it in droves.
Worse, really, since Unitarians don't pretend to be "Christian" in any meaningful way.
The entire Evangelical Lutheran Church in America denomination is a heretical cesspool.