I have never heard jig used in reference to anything other than a dance, a fishing lure, a type of saw, or a cutting pattern. Its like the false outrage over the French word picnic - normal people think about outdoor lunches, race baiters think its a southern expression that short for 'Pick-a-N......' , where a black person is chosen to be beaten mercilessly after lunch.
In both cases its overreaching to apply the label 'racist' to something liberals don't like. ( In the case of Picnic, it was to stop college Republicans from having one for its members, which worked. They then advertised the event as an 'outing' which got the gay/lesbian alliance involved in stopping the event, which also worked )