I think there are limits to what you can express through pictographs, while this ideographic way of writing might be more versatile. Though, the article states

I think there are limits to what you can express through pictographs, while this ideographic way of writing might be more versatile. Though, the article states that there are about 2300 symbols. That seems very excessive, and if there's no way of interpreting without memorizing (would it then still be ideographic though?), it doesn't seem very useful to me.