I could be wrong, but in order to allow the door to slide, I don't think they can really be that tight to the wall. It looks like a wider door would help privacy in that it would overlap the opening better.

If you want privacy, put in a real door. With hinges. And a latch.

Barn doors on bathrooms are completely pointless. And you'll never get a single decibel of sound attenuation no matter what you try; they're just too loose.

As others have said, barn doors are bad for bathrooms for the reasons you've stated. I'd replace it with a proper hinged door.

I had a house years ago in which a bathroom had a pocket door. It seemed to work OK.

Barn doors are for barns. For houses, I don't see the advantage.

You needed a larger door and why would you or anyone else go and peer into the side

Barn doors are not good on bathrooms. I had a friend with one. It was horrible. No one visiting her would use it. I have a pocket door on one bathroom. It isnt the best either, but, it is better than a barn door, and the bathroom it is on, is off the mud room, so it is not used all that often either. However, others are right, a wider door would certainly help things a bit, if you have no other choice.