They could just actually believe what they're saying. People are known to sometimes actually believe things.
Do you think Anthropic sees Claude as sentient? I don't think they do.
There is good evidence that at least some of them take the idea very seriously.
NYT gift link to article about their discussions with religious leaders: https://www.nytimes.com/2026/09/29/us/anthropic-claude-moral...
Believing that these guys have high enough EQ to pull off the above as a marketing stunt while remaining believable is not really plausible to me.
I bet some of them do and some of them don't. There are a lot of weird people in these companies that believe a lot of weird things.