I love Rotor cranks for their modularity and the fact that they do offer unusual crank lengths and the like. Plus, the quality is top notch.
Ignore the haters.
Plus, women’s bikes (or smaller bikes) don’t get 155 mm cranks either. I think the smallest crank size I have seen by default was 165 mm, which is what I have on my bike now.
Crank length does give an extra dimension to fitters. My fitter (a former world tour pro team mechanic, so no dummy when it comes to bikes) also initially balked at the idea. I asked him to let me try it. So he just took the crank off a random bike in the show room (a woman’s bike, I think ) and let me try it. That settled it for me, 165 mm it was for my next bike.