Why do you think that?
In terms of practices that implicitly or explicitly tell nuns that they are inferior, garudhammas and questions of seniority vs. gender - among other things - are also an issue there. And all these small things that Ayya Vimala has mentioned in her post occur with monks from Bodhinyana just as they occur with others.
(This post is not intended to criticize Ajahn Brahm’s tremendous contributions to the revival of bhikkhunis and the building of bhikkhuni monasteries 
- but these are not the focus of the present thread.)