Are you arguing that just ficus ginseng isn't a bonsai or all ficus?
Ficus Ginseng, and then specifically the ones that are grown in such a way that they grow these fat and ugly roots, that have a clearly cut off top, and foliage from another ficus grafted on top.
These in no way represent a majestic and old tree in nature, are often in round white Ikea pots which are not bonsai pot, and can really not be considered bonsai.
It seems to me that one still achieves the qualities of the natural, tropical ginseng plant as a bonsai. I'm not sure what lacking qualities you mean.
This ficus has the qualities of a bonsai:
These don't, and to use LB's words, are a parody: