I'm very confused by this. She's a billionaire, it's actually unthinkable that there would be that much mold on her walls. That's just like, literally impossible. Even if she doesn't notice it, one of the people she pays to clean/cook/whatever surely would. But if this is an unedited photo (actually, hold on, maybe it's an edited photo, that might be the explanation), then I'm struggling to see what else that could be except mold. It doesn't look like weird wallpaper, it's far too uneven for that.

I think I'm going to believe the photo is edited to make it look like she has mold on her walls, at least until I see a video or some more photos from slightly different angles or whatever.

Edit: Oh. A picosecond of googling has shown me this is actually her twitter profile pic? She uploaded this herself? Well there's my theory out the window! She wouldn't edit mold into her own photo, that doesn't make sense. So very possibly indeed a full on billionaire has tons of mold on her walls? That makes no sense! That actively makes negative sense! I don't understand!