Local social media is different from bigger social media platform.
Those big social media generally are American/Western-centric. Sure, you can find local community on them, but their moderation system are often still Western-centric.
You’ll surprised on how often other language being moderated (deleted/removed) because it mistaken as hate speech. For example, word that in certain language has neutral meaning, but mistaken as offensive in English.
Also, local social media often designed to local culture. Xiaohongshu and Plurk are the primary example. Entirely unique UI and user experience.
Even fediverse also this cultural-focused software. Take a look on Misskey (a Japanese-made fediverse software), it primarily designed for Japanese internet culture, which entirely different from Mastodon or Pleroma.