@Killerkaim please start creating artist entries. A source and an artist tag are required on this website. For sources such as Pixiv and Twitter, there's no excuse for not including an artist tag.
On posts without an artist entry, when you click edit, you can then see an option that says "create artist entry," which leads to a new propulated artist. You should create artists using that. You can open their Twitter or Pixiv to check for other sources in their bio and for the most appropriate name for an artist. From another Twitter or Pixiv, you can use the bookmarklet to go to an upload page and use the create artist page linked there to get the missing Twitter intent link or Pixiv stacc page.