It isn't definitionally a porn site. But porn seems to predominate, so saying it is definitely not a porn site is also wrong.
the stats page doesn't exist currently, but you can check this by running a set of 3 queries within a constant time period which is chosen to avoid capping out the result limit, eg:
- date:2019-01-01..2019-06-31 rating:safe -- 134 pages (22.5%)
- date:2019-01-01..2019-06-31 rating:questionable -- 112 pages (18.8%)
- date:2019-01-01..2019-06-31 rating:explicit -- 349 pages (58.6%)
(@ page size=250)
Theoretically you could then weight these by the total # of favorites or score value, but I don't really trust either of those to have a consistent meaning.