Okay so, here is my piece:
No one is happy Tira is DLC, however we knew someone was going to be DLC, Tira is just the one that was chosen, because a lot of people don't care if it is DLC or something else, if they have the chance to play her they will, that is where her popularity comes in- You could try a day one DLC with other missing characters, but they wouldn't be as likely to generate the needed revenue.
Second, Tira might not even be ready, the game went gold 4 days ago, which means the things on the final game were decided at least a month ago, if she is day one DLC that only means that they chose her to develop for that, it wouldn't be different from any character- if it was Cervantes or Raphael, the reaction would be widely the same.
Saying people are brain washed because they are okay is disingenuous, Soul Calibur is a popular series doing what all other fighting game series did in the past 5 years, I will say it could be far worse, we know the game has single player modes now, we know the game has a deep Creation mode and we know the single play story mode has both Overarching and personal stories. The game has a lot in it and I will be honest, niche as they are fighting games need help, one more thing- If she is a pre-order character (yes there is confusion about it as of yet) it is always going to be a character, pre-ordees for fighting game are always that.