The problems with punitive actions after an evacuation are manyfold. Someone, presumably with the airline, would have to make positive the identification of the offenders and record the violation. This would need to be followed up with the issuance of a citation by law enforcement.
Considering the dire circumstance that led to slide deployment, this seems a trivial thing to pursue in comparison - can you imagine the purser walking round the tarmac with a notebook, taking names, etc, post crash? The last thing an airline would want, after having traumatized (at minimum) their passengers, is to pile on by accusing those same passengers of wrong doing. It would be a public relations nightmare.
Had the careless or wonton actions of certain passengers led to the injury of others, then it should be pursued, but I have yet to see or read about a clear case during an evac where this has occurred.