I guess the topic maybe shouldn't call these people "plinkers". To me, plinking is when I go out to the farm and shoot at tin cans and the like. When I go to the range, I abide by the rules. I understand the need for rules such as 'no rapid fire'. Especially at a suburban pistol range or indoor range, uncontrolled fire can place a bullet into the wrong trajectory, and it can do some damage. Since training every single shooter is not an economically feasible option, blanket 'no rapid fire' rules are thusly created. If you violate these rules, then you should be asked to leave.
Silencers have NEVER been illegal !