My village only posts important information on Facebook. I don't have a Facebook account.
Many US government offices and departments, esp on the local level, only post official messages on proprietary social media platforms like Twitter X and esp, Facebook. That is the only place they post, not even on their websites.
In times of emergencies or critical events, this means people not on those platforms miss out.
We need a strong law in the US that says if a gov office, federal, state or local, posts info to the public primarily online, they must do so in an open fashion. Alternatives could be adding RSS, cross-posting to their website, etc.
Locking citizens out because they choose not to use a platform is bad.