[claudiawerner]

Danbooru requires one to have a 'gold' account to see pictures tagged as lolicon or shotacon. That's a $20 one-time purchase. It's not clear to me that they are using such an account.

[the8472]

They used an open dataset (danbooru2018) which was scraped with a gold account.

[claudiawerner]

Worth noting that according to the stats listed, neither lolicon nor shotacon make it into the top 19 tags.