In Ontario, Canada people can opt in when renewing their health card (a card used to access public healthcare) or driver’s license, and it probably does positively impact the rate of opting in, but it really doesn’t seem to address the need. I’ve been a registered organ donor since I was 16, but most people I’ve brought it up with aren’t.
I suppose if choosing an option is mandatory instead of voluntary then that would change things for the better. Is that what Germany is doing?
Brave uses their own search index, so they are quite literally trying to do that.