And again for you: you can't and shouldn't compare crowdfunded games and how to mange them to publisher financed games. Completely different playing ground. If you don't see that you're the one with the stupid opinion.
The terms under which you crowdfunded it were clear and unequivocal from the start. Obsidian never promised you that you would get the game earlier than other customers, they never even hinted that you would get unspecified perks beyond those which you paid for, and they never said they would suspend marketing activities to appease your sense of justice.
You are a customer, not a patron of the arts or a stakeholder. If you misunderstood what your backing meant, that's not Obisidian's fault.