I found out, that there are third-party-websites, where I can enter any Twitch-username (not just broadcasters), and it shows me all channels, that this Twitch-user follows. Everybody can use such a website. You do not have to be a developer or a broadcaster or a moderator. That means, that this information is public. I was not aware of this. I did not consent to this. I thought/assumed, that this information in private.

This information should be private by default (not public by default) (especially if you are a viewer and not a broadcaster), and there should definately be an option for the user to make this information private.

I only found out about this randomly. The normal Twitch-website (including my settings) does NOT say that this information is public.

I find this very bad and very concerning. It also makes me wonder what other information about my Twitch-account is publicly available for everybody on the internet.