Terrible change, IMO.
Even if the older expanded list skewed a bit into jokey territory in the wording (which I think is fine, even for -- maybe especially for, the secret agent bit because jokes are a fantastic way to highlight injustices) it gave Joe Random user a much better idea of what things incognito won't protect him from than the new text does.
The dividing line of protection incognito gives you may seem completely obvious to anyone reading HackerNews, but I assure you that it is non-obvious to my non-tech friends and family who tell me their new computer has "2 terabytes of memory".