Paper is a low mass low loss material. Paper cones have better transient reponse ang higher mechanical Q compared to plastic/polymer alternatives. They have higher efficiency. But they may have resonances which must be taken care of at crossover side. The envoiremental robustness is achieved by surface treatments. But since it is a compressed material it will loose it's structural rigidity in time. High tech marketting jargon can also be applied to parper cones by giving exotic names to pulp mixtures etc.
