

That’s because there’s different levels of such a thing. Way too many people use the term “sentient” (even me) and yet that’s not even what AGI is aiming for. “Sapient” is the right word. And I doubt there’s solid consensus on what and how it occurs within the fields of experts.
But I’m not an expert, so I wouldn’t pretend to know. I have seen debates between people who do know more, and the fact there’s debates concludes it’s not settled at all.
I don’t think there are debates about that. There’s whatever they say, and there’s the few that make content by saying, “okay, let’s take a deep breath and pretend there’s anything to work with, and go from there”.
Actual modern flat Earth was a spoof, I believe, but enough people with low science education and some religion ran with it as having anything worthwhile. And there’s the few that don’t believe it but feed off those others, keeping it going.