I'm not sure what you're suggesting (often the case with analogies). I'm not going to even guess where you think liability in that analogy interfaces with someone, who doesn't even know what Flash is, using Windows on their home computer that gets pwned by a Flash exploit.

But you need to temper your argument across your posts here with the various benefits of the appliancification of computing for most people.

Since you don't, it becomes impossible to parcel whatever argument you're making from the arguments of "people should care more about <arbitrary thing that I happen to care about>" and "anything that addresses the needs of others over me is bad" and "there is literally nothing good about an automatic Windows update removing Flash."