Not everyone knows about AutoIt.
Silent switch abusers surely know about AutoIt, AutoHotkey and tools like that Now it's only the common Joe who suffers.
Anyway, check your email :)
It's a big disappointment doPDF doesn't support silent switches anymore. You lose a lot of potential clients and exposure this way. What abuses are you talking about? This is the only application using Inno Setup with silent switch support disabled. We need it badly! Please!