I had an old bike that was fairly noisy. I got a new bike that is remarkably silent. I try to use my bell or my voice but I still end up sneaking up on people all the time and, as you said, they don’t enjoy it.

From my experience even if you have a loud bike and yell “on your left” 3 times many on a shared use trail will be surprised as you pass them.

Then there are the people who for whatever reason need giant over the ear headphones and also need to walk right in the middle of a bidirectional trail.