Why don't you apply the same logic to meditation or driving a car?
Every time a new technology comes out some caveman will say, "But it's better to do it the old fashioned way. More pure."
So then by this logic you should wipe your ass with your hands. Sure, you could use TP, but what have you sacrificed? Why are you deluding yourself out of desperation? Why don't you patiently wash the shit off your hands each time? This will toughen you up. It will make you a read man. What kind of Buddha are you if you cannot stand a bit of shit between your fingernails? Only a desperate and greedy person would seek a better way. It's bound to backfire. This is antithetical to being human. God wants you to wipe you ass with your hangs like the Buddha did. My guru wiped his ass with his hands therefore so should everyone else. For sure your knowledge of your ass will be tainted if you don't get the full experience of wiping it with your hands. You will not understand the ins and outs of ass-wiping fully. Your technique will be bad. The gods will be displeased and not give you blessings. The gods gave you two hands for a reason, one to eat your food and the other to wipe your ass.