You can't "leave the country" for the large default subs. That kind of argument doesn't scale well into the millions+ subs where even if every mods on that board being a dick to 2-3 people a day, they would still need years to make the current population of user to get noticeably affected. And because they are basically the default subs, their new users make up for whoever is leaving anyway.

The mods for those big subs are literally untouchable and can do whatever they want, with no accountability.