If I remember correctly, (and I may be wrong), when the first section opened, it's main intention was for the Amish to use the trail to get their tobacco to the auction warehouse in Hughesville without having to get on rt 5. This was done to provide a safer route for the Amish and to alleviate traffic along rt 5 in the morning rush hour. Like I said, I may be wrong.
As far as a little horse poop on the trail, get over it. If I remember correctly, horses are allowed on all of the trail, and have been since the beginning. Are you going to ban all horse traffic on the entire trail ? I doubt it. How about pets in general ? What next, no dogs ? Geesh, get over it. People are getting to soft these days, it's Mother Nature for gosh sakes.