I read a toot about it last night when I was very tired. Apparently there is some sort of (anti-)privacy protocol in universeodon’s source code that is getting implemented to Masto main source soon.

I wasn’t able to find the relevant post, but I do remember that it can only be disabled by toggling ‘Discoverable’ under account options. Evidently Eugen said something along the lines of “it’s what people expect from social media” but the point of Mastodon was to be a divergence from traditional social media, no?