I'm not meaning to take a dig at you, but the fact that you (and presumably many others) can genuinely ask that question serves to illustrate the parent's point quite nicely.

To spell it out, "abuse" here means to engage in behavior that is socially undesirable or disruptive or would generally be expected to upset otherwise reasonable neighbors or whatever while nonetheless falling within the bounds of the law. An alarmingly large amount of what goes on in the US falls into that category IMO.