Bots generally kill themselves repeatedly in order to continue farming. Nexon knows this and made the auto ban system look out for those actions. After ending the meso farming potential, legit players are resorting to the same tactics to continue farming that bots use. This could potentially trigger the system.
All in all, dying isn't against the rules.
Dying repeatedly causes the system to think you're trying to abuse the system.
Doing so is risky as it sometimes results in a ban.
Keep in mind that those banned via this method are treated as actual botters and thus nexon will be unlikely to help.