I totally agree that barriers should be put up in HDB void decks to deter people from disturbing public peace. There ARE amenities available but people just need to put some effort.
Kicking a ball around and against the walls in void decks can generate noise that resonates to the residents staying in the upper floors. We talk so much about being a caring and compassionate society, then we must show consideration and due respect to others.
So please do not trivialise what HDB or Town Council has done regarding this case.