If he looses he will become an un-person and all traces of him will cease to exist.
Anyone who's not computer savvy is probably using IE as default anyway. And if they aren't using it as default then someone who is computer savvy can easily fix it for them over the phone.
If you let the IE install do it's thing automatically then it sets itself as default.
Anyone not choosing to customize IE's install deserves to have it supplant their settings.
The amount of time between slipping on the peel and landing on the pavement is precisely 1 bananosecond.