Porn angle notwithstanding, if nothing else, this should be taken as a sign of the fragility of the Fediverse, and a warning that server communities which are only administrated by a single person (who could get hit by a bus at any time) can disappear in an instance. In order to make the Fediverse more robust against stuff like this, we really need servers and communities to have at least 2 admins with the necessary level of access for handling unforeseen circumstances. A single person going MIA randomly shouldn't be enough to take down an entire Fediverse instance. (I saw something similar happen with kbin, when one day the site just... went down!)
Now when it comes to the porn side of this, this is also kind of bad news for Fediverse adoption since there are a lot of sex/porn/kind-related communities on Reddit, and now we are kind of without a lot of that stuff.