It's the same in Norway, and news paper chronicles are going as far as saying things like "Now that we learned that we went to far, what do we do with the generation of kids we experimented on?". Food for thought.
Considering how many old people hold on to beliefs like women belonging at home doing the household and/or that people of color are violent, I'm not sure such a conversation is going to lead anywhere. We let them vote until they die, or authorize someone else to get a second vote (like my 90yo grandma does for my 65yo conservative/racist dad), as though they still have an understanding of society. A good understanding of climate change is barely 40 years old, if the news didn't tell them then they just go no education on the world's biggest ongoing challenge. People have just been letting the old generation be because we can't figure out anything better (I'm also not sure what a good system would look like)