Things like manspreading are hardly an issue. When women in the middle east are undergoing honour-killings, brideburnings, more rapes etc the list goes on. I'm sure we all see what the bigger issue is
So what? Women in the middle east are not complaining about manspreading ... unless they do, because manspreading men TOUCH THEM WITHOUT CONSENT and I have been told that this is sort of a bigger issue to Muslim women.
Anyway, what you miss is that we are not in the middle east. Children are starving in Africa, is that a reason to not worry about malnutrition in European children?
Women in the middle east can do feminism as they see fit. Unless you suggest sending an army there, I don't see what this has to do with the way European and American women should do feminism.
Shutting up and not complaining about manspreaders won't help women in the middle east.
Of course, complaining about manspreading is not that productive ... what is really productive is critical thinking that gets at the roots of the problems. Such as explaining why PIV can not be assumed to be fully consensual in the world we live in.
But if you do the latter, then you "put young women off feminism".
The remaining options are: Either you aren't a feminist, or you put others off feminism.