Yes it’s still possible to introduce bias, but it would make a big difference on the ability to gerrymander, because you don’t have he degrees of freedom to stack voters in the same way.

If you’re into maths and want to know the theory behind it, it is based on the Vapnik-Chervonenkis dimension of the shapes used for distracting. https://en.wikipedia.org/wiki/Vapnik–Chervonenkis_dimension . Not a fun read! But accurate