@Ya'akov
@WhyYouCare
If you want to use the bot don't start using it 24/7 at the day you create an account. Otherwise you'll grow too fast and they will notice you for sure. Also it's risky to use a bot on a newly created server.
So far the moderators don't have any automated tools to detect the bot, otherwise everyone would have been banned. The moderators have to manual inspect your account when they are suspicious of your activities. Also it's likely they inspect the top of the server more often.
@squatinbear
It still depends on when they suspect you. If they had a new method the bans wouldn't look so random. I have a number of accounts that are running 24/7 for the past few months and I haven't received a single warning/ban. Unfortunately there are others that are banned after just a few days. The precise reason for bans will probably remain unclear.
~Uthar