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The mark observed is from locking up the tire while braking.
Burnout marks would have it evenly worn and ragged margins, discoloration, chunks missing, blistering, or strips of tire missing along the circumference.
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Must have pulled the ABS fuse
Do ABS bikes have a full off? Doesn’t look like there is a spacer, so you are probably right.
KTM Dukes, which this bike is, have a supermoto mode you can enable which deactivates the rear ABS so you can back it in