If it can't be jailbroken then what's the point of mentioning the unlock? That's how I see it.
This thread is not about the USB hack. It's about the new baseband and the fact that it doesn't work with blacksn0w. Just as with 05.11.07, there will be tons of people who unwittingly upgrade their phones and lock them up. Many of those will be perfectly capable of downgrading their firmware (since they either have a 3G or their ECID SHSH on file), but will still be unable to unlock their phones for the foreseeable future. Firmware upgrades are potentially reversible; baseband upgrades are not.
Furthermore, baseband has absolutely nothing to do with jailbreaking, so it would be completely misleading to make a thread title that suggests it does. It is not the baseband that prevents blackra1n from working, it is the USB patch. And that is not what this thread is about.