And I had no issues at all and no one I saw, whether folks walking their dogs, joggers or other bicyclists seemed deterred by the area with the tents. It gets a little trashy and makes you think twice about continuing, but if you stay the course, you soon exit the tents, and the trail resumes in a suburban wooded atmosphere.
The trail from downtown is pretty nice for about a 5 or 6 mile radius, but then in most directions just beyond it becomes a section of homeless tents pitched literally right along the trail. My recommendation is to research and have a plan for parking prior to going. I was leery but with little choice other than to keep searching for parking, I did just that.
A passerby said don't worry about it, that he always parked there and never paid. There was curbside parking via the kiosk but trying to enter my Md license plate number didn't work. After getting a bit lost in downtown I found my way to Point State Park and parked along the street amongst a bunch of other vehicles. I brought my bike so I could ride the Three Rivers Trail specifically. I arrived in Pittsburg on a Monday afternoon by car.