That's correct. Can't imagine why others disable such a helpful core feature. In addition it comes with native AirPlay support for music streaming. Those are at least two features that could influence a buyers decision.
Sent from my HTC One M9 using XDA Labs
LG & Samsung both opted for faster internal storage so I'm sure they were against integrating a much slower sdcard storage with UFS 2.0. It would kind of ruin the point of putting the UFS in there. I appreciate the option HTC has given us but I will most certainly not be using it as it will slow down some things and I like to switch out my sd cards sometimes.