This whole "feminism isn't feminism if it includes transwomen" just screams "what about the menz" to me.
My feminism doesn't directly include transwomen, because I think transwomen have different issues to women in most walks of lives, and sometimes their needs directly compete with women.
I do believe transpeople have the right to largely live their lives as they chose and, for example, they should not face violence or discrimination for presenting in a gender non-conforming way. I do not think they have an automatic right to women only spaces. I do not think they should be grouped in with women on statistics/surveys (I think this is actually harmful to both women and transpeople). I do not think transwomen should ever be allowed to participate in women's sport. Females and transwomen face different health issues and may face different issues in the workplace.
I think pretending there is no difference is actually harmful in some cases. For example, with statistics, if you always just include transwomen in the category female, it may harm women (because transwomen may be more likely to commit violent crime, or may have different career trajectories, as they won't usually take time out for childbearing in the way some women do), but it may also harm transpeople. If transwomen are more likely to be victims of crime, or likely to be fired due to coming out at work, or find it harder to get a new job it will be impossible to assess this if they aren't considered a discrete group by the people collecting statistics.
Applying critical thinking to these issues is important and should not be censored.