You're confusing a browser password-keeper with a house lock, when the house is actually synonymous to the machine. Lock the machine. Should every OS come with only encrypted filesystems that you have to enter a password on every read? You know, so your brother doesn't find your sexts logs?
More and more of our data is being stored online. Many things that you might want to keep confidential is nonetheless behind a poorly designed "firewall" of passwords. That's the problem. Demanding that someone never forget a manual process (locking the machine) is adding a massive point of failure. This is bad.
What does that have to do with a browser and poor analogies? Neither protect important documents on disk, a shell open with root, an ssh open to your production, etc. I'm not condoning Chrome's actions, but I'd also demand not storing passwords in a browser at all, and do all sensitive browsing in incognito, so your sessions can't be lifted.
