How do the bullet points in "Why does Go leave out those features?" address why Go leaves out the features on the preceding slide? All it talks about is clarit

How do the bullet points in "Why does Go leave out those features?" address why Go leaves out the features on the preceding slide? All it talks about is clarity (important but not the only important thing) and I just don't see how any of the left-out things are inherently unclear. I think you can write clear and unclear code alike with all of those left-out features.