I think it’s a very interesting social experiment, you just don’t read or see these types of incidents happening very often if at all in the country leagues around the state.
Not quite a country league but I can think of at least three massive crowd brawls in the SFL that I personally saw (granted I stopped playing down their 15 years ago). The GF had to be permanently moved to South Adelaide's oval to help stop the crap that was happening in the crowd on GF day.
The ADFL is huge compared to the country/outer metro leagues.