I moved to Korea and started posting on r/Korea. I recorded a video of a big fire in Seoul, and because I couldn't find any news about it I uploaded it to my peertube instance and linked it on r/Korea.
The mods banned me for promoting my own website and said I should have uploaded it to YouTube.
So that resource was gone which was a bummer for me who just moved across the world and didn't speak Korean. That was my main reason to use reddit.
I already hosted mastodon and when the 3rd party amargeddon happened I heard about Lemmy. I was hoping that there would be a vibrant Korea community which never happened.
But somehow the UX is much better than on mastodon so I stayed. Later I switched the software from Lemmy to PieFed though.