Earlier quoted context omitted.
I'm intrigued. How does Japan Twitter works differently than western Twitter? Can you shed some light or provide a link to read about it?
I'm not sure it's all that different, just maybe you see more of it if you interact with JP twitter? Like artists use integrations to share their art on twitter and elsewhere, and lots of various services/games/survey-things prefer or require you to use twitter login instead of making you sign up with them directly and they use the API on their backend for various things. But that happens outside Japan too. I just wo…
That's all I mean. I don't use Twitter on ID on mobile apps and I don't think this is common at all in the US, but it's not uncommon for random gacha games to tie player ID by Twitter accounts in Japan. From what I can tell nobody is sure what the consequences of the change will be, like maybe auth only uses are fine. But since nobody knows, all the big games are playing it safe and telling everyone to move their player IDs away from Twitter.