There's nothing wrong with having LGBTQIA+ flags in your app to highlight marginalized groups. But to respond to a plea for extension of that list with "fuck you, Nazi Transphobe Sexist Scum" isn't the way to go.
The VAST majority of my LGBTQIA+ friends in health care agree. Your candle won't burn brighter if you blow out other candles. Adding more colors, adding more flags, adding more recognition, does not diminish the recognition of the original marginalized groups. If anything, it creates understanding, community, personhood, and normalizes LGBTQIA+ as not an outlier but one in a scary number of identities and groups that are being mistreated.