@gmiazga Seriously? This makes Opera terribly unacceptable in any corporate environment. As an IT admin, I absolutely have to have the ability to uninstall applications in attended (silent) mode. I have hundreds of computers and cannot afford to connect to each and every computer to react to interactive user prompts.
Please bring this to concern to your decision-making team. The silent uninstall capability has to be brought back. Otherwise, everyone would have to go through all the hassle of developing Opera uninstall scripts to clean the mess.