It also detracted from his credibility when he makes a prelude to the transcript saying "Where we edited something for fluidity and readability that is indicated in brackets as [edited]," that seemed disingenuous from the start. They did so with at least 18 of the prompting questions, including 3 of the first 4.
It seems pretty clear that he set out to validate his favored hypothesis from the start rather than attempt to falsify it.
Particularly telling was his tweet: "Interestingly enough we also ran the experiment of asking it to explain why it's NOT sentient. It's a people pleaser so it gave an equally eloquent argument in the opposite direction. Google executives took that as evidence AGAINST its sentience somehow."