Seriously? That's all you've got?
What bugs me about public ranges is grandfathers walking their grade school aged grandson down range in front of me to put up a target, but it's a hot range and we're still shooting. What bugs me about public ranges is an employee chastising me about safety glasses one minute before he calls the range hot...with four people still down range changing targets. What bugs me about public ranges is people stealing your pistol off the bench while you're down range changing your target. What bugs me about public ranges is people sweeping the line repeatedly while the RSO is in the office staying warm and drinking coffee. What bugs me about public ranges is being cussed out and told to f-off after asking someone to refrain from handling firearms while I'm down range. What bugs me about public ranges is being told that, if I ask someone to refrain from handling firearms while I'm down range ever again, I'll be trespassed from the property. (That's the employee's job, not mine.) What bugs me about public ranges is a State Police officer showing off his issued rifle...while I'm down range.
If the only problem your public range has is a litterbug, count yourself lucky.