People have a strange idea of feminism. If she takes up the cause of domestic violence, that's feminism. Including making sure male victims have support. Right now, she might solely focus on issues in the UK. But, if she eventually re-branches out into supporting girls having access to sanitary products so they can get an education, that is also feminism. And neither of those things is political. Or requires you to agree with certain views beyond what I hope is the non controversial view that human beings should be helped and supported.
No, she doesn't necessarily need to use the word feminist or identify herself as one. But, if she's supporting causes that people agree are good and necessary, are they suddenly going to view those causes differently if she dares to use the word feminist in conjunction with them?
It would be a crying shame if people let the loudest voices twist something like feminism into something bad. We don't know if Meghan will ever use the word feminist again (I'm in the camp that she should). But, if she's allowed to, and she does, how about we look at what causes she's involved in and decide what that word means to her and who she's decided to support and figure out how she defines the word. Instead of jumping to conclusions that if she uses the word, we know everything about how she feels. Remember, feminists aren't a monolith. Just because the loudest and the biggest attention getters feel a certain way, doesn't mean we all approach it that way.
And my initial reason for hoping she uses the word again is that I think it's beyond silly not to (it's not inherently political, so there's really no constraint against it). But, now, I hope she does so that certain issues become associated with feminism. If you look up Prince Harry and feminism, there's a lot of articles about a speech he gave about how men need to also speak up for women. No, I don't think he used the F word, but make no mistake, it was a feminist speech. So maybe if people use the word when talking about domestic violence or education for girls or postpartum depression or anything like that, people would see that feminism isn't a bad thing. Just in how you use the term.