I can confirm that in my limited experience doing live sound, when the LF section of the sound system is cranked a bit -- and also capable --, that people do dance more.
However, many systems are not capable of cleanly cranking the bass that heavily. It really is something special when you can feel the bass. Not just rattling you feel in the floor / your clothes. Literally feeling the air movement from the pressure waves generated by the excessive amount of subwoofer.
I remember one situation - a while ago - where I had a very capable sound system and I basically turned the subs up +10-20 db over normal. You could literally sit in front of the subs and feel the air coming out of them. Everyone there was dancing and having an awesome time. I have done stuff in many other spaces, and do not remember any other event where the crowd was as engaged with the music as that night, despite similar SPL levels, crowd composition, and music selection.
So yeah, low bass does help people to dance. But I think it has more to do with our perception of the 25-59hz region than whatever is below it. If you don't have that 30-60hz region, the music doesn't sound as "full", and people won't be as engaged with it. I propose that the quoted study is probably flawed. The VLF speakers could have perceptible output above 30hz, and the VLF speakers could be turned on during sections of the music which are more conducive to dancing.
In my opinion, bass below 20-30hz is generally perceived as "pressure" / activates a fear response.