Reddit admins just told me to ban evade

I logged onto an account I tried to age and use for reportmaxxing a few months ago, now it's gigajannied and I got this message. Has this happened to anyone else, and do you know what causes this so I can avoid it with my next account?

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▄░▐░░░▄▄░█░▀▀U HAVE BEEN SPOOKED BY THE
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░░░░░░▐▌▀▄▀▄▀▐▄SPOOKY SKELETON
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░░░░░█░░░░░░░░░░▐▌SEND THIS TO 7 PPL OR SKELETONS WILL EAT YOU
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