Firstly, it seems more accurate to say that the standard default belief is that video characters possess awareness. That the vast majority rationalize their default belief as false doesn’t change that.
Secondly, that’s argumentum ad populum, which is evidence—Common beliefs do seem to be usually true—but not very strong evidence. I asked why you’re as confident in your belief as you are. Are you as convinced of this belief as you are of most beliefs held by 99.99% of people? If you’re more (or less) convinced, why is that?
Thirdly, you seem to be describing a reason for believing that I share your belief that video game characters aren’t sentient, which is different from a reason for thinking that your belief is correct. I was asking why you think you’re right, not why you assumed that I agree with you.
Eliezer suggested that, in order to avoid acting unethically, we should refrain from casually dismissing the possibility that other entities are sentient. I responded that I think that’s a very good idea and we should actually implement it. Implementing that idea means questioning assumptions that entities aren’t sentient. One tool for questioning assumptions is asking “What do you think you know, and why do you think you know it?” Or, in less binary terms, why do you assign things the probabilities that you do?
Now do you see the relevance of asking you why you believe what you do as strongly as you do, however strongly that is?
I’m not trying to “win the debate”, whatever that would entail.
Tell you what though, let me offer you a trade: If you answer my question, then I will do my best to answer a question of yours in return. Sound fair?