I have a friend who's vibe-coding apps. He has a lot of them, like 15 or more, but most are only 60–90% complete (almost every feature is only 60-90% complete), which means almost nothing works properly. Last time he showed me something, it was sending the Supabase API key in the frontend with write permissions, so I could edit anything on his site just by inspecting the network tab in developer tools. The amount of technical debt and security issues building up over the coming years is going to be massive.