If someone had a noteworthy 'incident' in person (w an agent, on a flight) it wouldn't be hard to trace it back to the SM account.

Back in his Red Coat days MrWeezer often had interactions w unruly passengers. Once he delivered the bad news to a chronic complainer that his account had been closed, the guy had been warned he was on a short leash. Apparently he was prone to being extremely rude & having loud outbursts w agents, FAs, etc. The final straw happened prior to a flight into ATL, MrWeezer met the plane on arrival. The guy started yelling at him, MrWeezer calmly asked, 'is it true you threw your briefcase at my gate agent in (departure city)?' From his telling that pax was an extreme case of consistently bad behavior.

He estimates he 'bounced' around 200 pax off planes in those days for a variety of reasons, most commonly pax under the influence. But he didn't necessarily document those passengers' records.