Earlier quoted context omitted.
> a very loud, probably rather small subset of Tumblr users (or rather: former users) Well, according to this chart (which I have only cursorily vetted), it seems there are a lot of "former users": https://www.reddit.com/r/dataisbeautiful/comments/af9rwu/oc_... It shows that as of Jan, 2019, there were about 50% as many users as when the ban was announced. That would suggest that there are as many "former users" as t…
The assumption that Tumblr's loss of users is entirely or even mostly due to suppressing adult content is probably unwarranted, but I'd be interested in data either way.
The Wayback Machine doesn't have fine-grained enough details to get a good estimate of how much the loss of adult content itself was responsible, but this does reinforce the impression given from the Google Trends link cited several times that there has been a steady decline in Tumblr punctuated with a massive hit on or around the removal of adult content.
[1] https://web.archive.org/web/20170711122839/https://www.tumbl...
[2] https://web.archive.org/web/20180714223645/http://tumblr.com...
[3] https://web.archive.org/web/20190713180936/http://tumblr.com...
[4] Each of these dates is a Saturday, so not quite a year later, but matching time of year and day-of-week is better anyways.