Bot busting bans are automated, as are most of the other bans. You got detected, as you always will do - Has nothing to do with bots being around, if you use a bot client at all, they'll detect it and ban you.
Also - It'll never be safe again, they're done with botting. There's zero bots on RS3 and OSRS will be the same soon, it's getting there and it's only so long before it reaches that point. Tl;dr - If you bot, you will get banned because they can detect it - It might not be instantly but you will.