I'm also not advocating for killing trolls that bother me... so take care not to belabor a quick metaphor.
The vast majority of disinformation comes in a few key topics related to current hot button political issues and is generally pushed by recognizable sources. It's not unreasonable to expect admins to check into user reports of disinformation and organized trolling against known sources. I'm not an admin so I'm not going to write up the specific criteria right here and now.
Choosing not to do so is also a conscious choice to host such content.