In its current form, in addition to the lack of public comments, you can also turn off the Replies (DMs) on each post, which will stop trolls from reaching you.

In its current form, in addition to the lack of public comments, you can also turn off the Replies (DMs) on each post, which will stop trolls from reaching you. I'm hoping this will be sufficient, although it will end up blocking out good conversations/replies as well. I'm not sure how to handle it better.