My two cents:
You should continue even though there are also amazing women writing on feminism topics - there is a severe lack of male writers on feminism and I think this alone is an important role you fulfill.
Even when more feminist writers arrive on Steemit they will not share all your followers and therefore you will have your own (added) reach compared to others too.
With should I mean: when you are interested and inspired. If allyship is something that's on your mind - please write about that. It's all valuable and there can't be a lack of feminist writers IMHO.
RE: Feminism Sunday: Should It Continue?