That is not true, low fat. Many helicopters, including Airbus, Robinson, need to undergo a 12-calendar year inspection, regardless of hours flown during that period. Once they are beyond the calendar limit, they are simply not airworthy (not limited to 'no training') until that maintenance job is done.
Once the inspection is done, they are released to service again. What carlmeek reports, if at all true, is about something else.
Also, guys, please don't confuse the Robinson 12-year inspection with the Robinson 2.200 airframe hour overhaul. The 12-year inspection is a relatively small subset of the 2.200 HR overhaul.