I won't presume to speak for the owner of this newsletter, but I do receive it, and I'd just say: "I don't want to see messy spaces." The whole point of seeing other people's workspaces is for inspiration – what are ways I could organize my desk, what are some neat things I might want to add, what tech is out there I could purchase to make me like my workspace better. My workspace sometimes look messy, but I always clean up before people come over, so it's kinda the same thing here? I'm sure lots of these folks let their workspaces look lived-in normally, but that's not what we're here for.