What he's saying is that it seems rather implausible that we'd skip all the stages of development and jump straight to consciousness which is a reasonable position to hold. His argument is that creating a simulacrum of consciousness is much easier just like faking a moon landing is much easier than actually going to the moon. Nowhere is he saying he would just never believe it no matter what either. He rather says that he hasn't seen any convincing evidence to suggest that LLMs are a way to create consciousness rather than simply write text in a way that makes humans project consciousness onto the system.
Also, not sure what you're saying with your second quote. Why wouldn't anyone ever do the steps of actually creating a proper feedback loop which would have some basis for consciousness?