I too believe this to be a good sounding board for opinions, I was merely pointing out that your opinion was subjective as a non-dog owner and tried to push the undesirable dog owners and people to a triangle of grass that is poorly kept and pales in comparison to the horniman park.
The Horniman is a large park in terms of different areas and relative quiet nature. It is not always packed and there are areas for non-dog owners to take their children if they do not wish to be around dogs off their leads. There are also park attendants at busy periods to keep people to the rules.