Mastodon core devs avoid discussion of server choices because it inevitably reveals that 1/3 to 1/2 of Twitter/Bluesky/Mastodon by volume and/or users are Japanese image posters incompatible with Western, especially European, languages/memes/values.

2/3 of top 3 and half of top 10-20 Mastodon instances(not including Misskey ActivityPub servers) are Japanese. They really don't like that.