I think the power of silence depends on the severity of the crisis. If your product is physically harming people or cost someone a lot of money, the controversy

I think the power of silence depends on the severity of the crisis. If your product is physically harming people or cost someone a lot of money, the controversy probably isn't going away after a few weeks of silence. People will not forget about a loved one being seriously physically or financially harmed. However, if the issue is a buggy piece of software that costs $60, that is going to be quickly forgotten. People don't have the energy to stay upset about something that in the grand scheme of things is so minor. If this is still registering on your personal radar a month later as a serious problem, consider yourself lucky.