Some of the appeal of live edge table, when done well, is that they evoke the randomness of nature, that there is beauty in unpredictability.
When people stick hairpin legs under a chunk of log it so predictable and lazy that it inverts any delight we might feel.
Most live edge tables I see make me angry - any lump of wood stuck on top of a rectangle of metal. No feeling for proportion, harmony or even materials, in spite of itself.