That's quite a reach there. Of course I don't think that. But just saying 'duh use menstrual cups' is a classist response. Where resources are more scarce they need to be prioritised, and so some people may not have water or fuel to spare to boil a menstrual cup, or the privacy to do it in eg if a stove is shared. Let alone access to menstrual cups' in the first place (which cost around £30 in the UK and so are already priced out of the range of a lot of people on low incomes).
So I looked up the price of a menstrual cup in Ghana. I converted the price to USD, since that's what the article is in.
Asking someone to pay $14 out of their $26 monthly salary when they're already struggling with paying $3 per month is both an unhelpful and ridiculous suggestion. Do you want these folks to bleed all over themselves for five months while they save up for an option that might or might not work for them? They deserve more dignity than that.