Yes it sucks that your game arrives late. That's enough reason to be angry.

Sadly the Final Fantasy 14 Team did say that you should check where you log off before the 23rd so you are not in a Stormblood area if you want to log in the next day without having registered your code yet. You can be mad for not having recieved the game/code yet, sadly not for being booted. You can still play ARR/HW (if you owned it before Stormblood and didn't buy it with stormblood) without the Stormblood code. You could kindly ask if a GM can teleport you to a non-Stormblood area so you can log in. Not sure if they can do that tho.