I don't think they will. We as a species still suffer from diseases where shit comes into contact with our mouth. If we can't solve fecal-oral diseases, any bioweapon you deploy will infect your own population. It's why we terminated our bioweapons program. It's about as discerning as chemical warfare. :P
On a related note, I'd fucking love bidets with dryers to be mandatory at all farms, hospitals, food handling facilities, markets, and restaurants. It would minimize the impact of fecal-oral diseases, especially with improper handwashing and food handling (eg, not wearing gloves).
Pestilence, TACO Don and the Ketamine Kid. Just waiting on the fourth horseman. This is shaping up to be an amazing year. :p
Actually, there are! (Though it's classified as invasive in many places, so they really have to be carefully kept.)
In the western US and Canada, thimbleberry leaves can also be used.
They are both great in theory, but in practice, you defoliate the plants too quickly, and you are still putting extra material down pipes. The best, least damaging solution are bidets, since they just use water, and don't require trees or plants to be cut down and pulped.
Your average bidet will usually have a built-in dryer if you buy name brands. Heated water, heated dryer. It saves a remarkable amount of money on TP too. It actually paid itself off after about four years of shitting. And your ass is incredibly clean afterwards, which is a blessing in hot and humid summers for reasons I won't elaborate on prior to getting a bidet, lol.
The Toto bidets have these features for about $335, iirc. You can usually find them at Costco. Amazon sometimes has them too.
Most people only use toilet paper, which is way worse. Bidets get you almost as clean as a shower, but I expect everyone is washing their ass with soap and water at least once per day in the shower.
Bidets these days have heated, oscillating water and blow dryers with hot air.
Yes, they have little doors and always retract back up after use. They also do an automatic bleed before and after each use to wash them off. There is also a manual bleed and clean option so the wand can be cleaned by hand (though they stay remarkably clean. The wonders of Japanese engineering).