Oh no. You’re saying it removes the posts from your frontpage when it’s active? In order to show your own Friends feed at https://sethgoldstein.me/friends/ (when logged in), it does modify the Query Loop but it should only do so on /friends/ to avoid what you are describing.
Do you have other plugins installed that might be interfering?
I am sorry but I do see that you have the Friends plugin active but I can still see all posts on https://sethgoldstein.me/thoughts/, I don’t see a “Nothing Found”. Which URL is that screenshot of?
I’ve tried this with the blog not in / and it works. I was only able to reproduce it when enabling another plugin (Post Kinds) but I don’t think you have that one installed. Could you provide me with a list of the plugins you have activated?