Developers built a web UI for creating containers for the labs, taking the advice from this (then future) article too literally. Their app could only build containers, in the approved way. Yet, not all labs were possible to run in containers, and the app did not account for that (it was a TODO). Worse, people responsible for organizing the labs did not know that not all labs are compatible with containers.
Lab coordinators thus continued to create containers even in cases where it didn't make sense, despite the explicit warning "in cases X, Y, Z, do not proceed, call Alexander instead".
So if you make one button you better make that it is always the right button. People follow the happy-but-wrong path way too easily if there is no other obvious one.