Earlier quoted context omitted.
Language should be adequate to the context of a conversation. If you were writing a legal document, or some policy for a kindergarten it might make sense to make that distinction, but this is a public forum with many non-native speakers. Parents is a concept pretty much all of us are familiar with and if you say parents we'll understand you mean people using the service because they care for young kids.
IMO I felt that battle was lost couple of years back when my wife was pregnant with our youngest. We were looking for CDC guidelines on covid booster for expectant mothers. The website mentions "pregnant people". That's when I felt discourse is evolving to cater to the edge cases. https://www.cdc.gov/coronavirus/2019-ncov/vaccines/recommend...
If there is a place I'd expect to "cater to edge cases" including those that only make up a fraction of a permille of the population, it'd be the CDC because they have to address hundreds of millions of people so even a one-in-a-million edge case still represents hundreds of people.