It’s not fast, but I think we’re talking about different things. You are probably talking about SOS mode. The Lockdown Mode requires navigating through a bunch of settings and entering your passcode to enable it.

And port is just one way Cellbrite works. It has many modes which exploit different weaknesses to gain access. Apple finally fixed the biggest one, by finally encrypting the iCloud backup. Before that, all the security measures were defeated by Apple itself, by making a copy of the whole device and leaving it unencrypted…

P.S. Apple only recently were forced to use Universal Computer Bus (USB). So most people are still using Lightning port (Proprietary Computer Bus).