Thanks for find! I am wondering if new users get a link/redirection to this bot. Just showing this within the badges page is a bid too hidden for me, I mean I guess most will never visit the full badges page, where they can also see badges they did not yet gather.
Because the information by this is here and there quite helpful, e.g. hiding details for longer copy&pastes or to give howtos a better overview. But yeah, user will find out most stuff by themself, too.
I was able to finish the advanced badge by just undeleting the post, that I deleted by myself just before. Jep the one, created by the bot, cannot be undeleted, which is a bid confusing 
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€: The bot is talking about a dark theme? Never found that, but would love it!