You have to realize when you’re botting you take a risk in just doing so. Being said, you have to bot “smart”.
Reduce suicide botting, buy a decent script for botting, use a reliable client. Look around this site for some guides on how to properly go about this. There are plenty of Q and A ones here on Sythe.
Part of the reason that something like hunter has a higher ban rate is because there are often other players around which increases the number of reports. NMZ doesn't have this problem as you're in an instance by yourself. Your chances of being banned depend on a lot of variables but it always helps if you're doing something where there's not other players around.
Another example of this would be high alching in your house with building mode on
Part of the reason that something like hunter has a higher ban rate is because there are often other players around which increases the number of reports.
maxed two accs at nmz with no issues. imo, older accounts will last way longer than newer ones. make sure you've got some legit play on them or they'll likely be flagged