Well, I was just asking because I find most people who defend the Nexus don't actually own one. It's more of a platform wars kind of argument rather than an experience kind of thing. It's quite easy to say "I'm sure it's fine", when it doesn't actually affect you.
However, I have to disagree with you. Unlocking a phone is very much a "security feature" and I'm very confused when people say it isn't, especially on a phone that has NFC for making payments straight out of your bank account. Looking at the setup screens, the phone does warn you that face unlock is less secure than other forms of locking. However, what I want to know is when does the phone say, "Hey, you know, now that you have your $20,000 credit limit discover card attached to me, you really shouldn't be using face unlock anymore". Or perhaps, "Your corporate email server requires that you use an unlock mechanism more secure than face unlock".