I find this particular argument rather frustrating. "Dynamic languages are fine as long as you don't do stupid things." One of the huge benefits of static typ

I find this particular argument rather frustrating. "Dynamic languages are fine as long as you don't do stupid things." One of the huge benefits of static types is that you can extricate yourself from those situations because the compiler can help guide you through large scale refactorings safely. It's not even that the team is bad or that the authors of the code were ignorant - it may just be that the software has evolved to where the initial code no longer fits the problem exactly. "Don't be stupid" is completely unactionable advice.