I actually hate these new trends. Moss Balls for epiphytes are totally doable....it's kinda the same as mounting an epiphyte on a tree, a cork plaque, etc...
But terrestrials in moss balls I am surprised that this has made it this far.
Also the new fad to sell plants that are basically 'rooted cuttings' growing in water jars at the box stores for $20+....?
All the ones I see here are already dying at the store