Yes, this is how I feel about it as well, but apparently it's a norm. Individuals will have their own unshared bidet towel in the bathroom that they'll use afterwards.
The bum guns are advertised on Amazon, for washing diapers! lol.
Agreed, you don't just throw the towel up on the rack and call it a day. Usually you throw it in the wash or wash it out with soap when you are done. But at least your bum is a lot cleaner than smearing poop all around it with TP.