This would be true if what the video shows is the main way of using Frost. This is actually one of the more obscure workflows, but I thought it would be cool to show it. Probably not optimal for first impression, as it appears ;o)
To create a Frost object out of any number of particle sources, you just select them in the viewport and hit the Frost icon. The resulting mesher will not only add them automatically to its list, but also center itself to their common center and average its color from the wirecolors of all sources.
Try that with BlobMesh or the other 3rd party meshers and see how long it takes )