While there is some truth in the spiel about the "hazards" associated with the chromium in the stainless steel alloy, it is just a tad "alarmist." Chromium salts in high concentrations can be hazardous for a certainty, but when very, very dilute make an excellent fertilizer component. Chromium is an essential mineral which the human body requires in trace amounts to control weight and diabetes, and when it is available in the soil to garden crops they'll take it in and convert it to a form that is able to be safely assimilated by the body.
The chromium is most likely to be leached out in an acidic electrolyte, or, in a cell which uses Sodium Bicarbonate as the electrolyte, and at very high current densities.
Always aim for a maximum of 250 milliamperes per square inch of plate current, or less, to preserve them. At very high current densities stainless steel plates will deteriorate.
For those who may be concerned about the possibility of chromium compounds forming in the electrolyte you may use nickel plated steel as a satisfactory substitute. But, rough it up before having it plated!