It all depends on what you ultimately want. Obviously, if you want to avoid triangulation at all costs, you can use manual retopo. Or do automatic remeshing. But you lose the color attributes generated by the SDF. On the other hand, if you want to usefully limit the number of polys and keep the vertex color information while reducing the file size, there's no point in keeping billions of polygons that don't have a direct impact on the shape of the object. Sometimes triangulations are not your ennemy. These are two very different use cases. IMHO...