I think Anthropic should have put all the info into one blog post. Splitting it up is really confusing people.
1,089 karma · joined August 14, 2013
I think that was intended, yes.
I'm not aware of any adblockers that can block the ads on the built-in New Tab page. (You can just disable them in settings anyway.)
If you want to know why that diagram has its white point where it is, it's based on testing a bunch of people in laboratories. It's fairly predictable and repeatable, but it might not match your experience outdoors.