The sisters themselves aren’t that bad. A little annoying, sure, but not as bad as countless other, worse characters in both this series and franchise. I guess their worst “sin” is their plot-mandated idiot mistakes which contribute to the padding, rather than the concept of the characters themselves (how they challenge Ahsoka’s perception is one of the nicer elements of the arc). And also I remember many people were expecting arcs such as Son of Dathomir to be adapted, so quite a few were left underwhelmed it got excluded in favor of Bad Batch/Martez sisters.

Did people really hate them because of their haircuts? What a stretch, though after seeing similar unfounded criticism for sequel characters such as Rose or Holdo it doesn’t surprise me how toxic some people can be.