I have this same question about the (apparently many) AI researchers who believe it poses significant risks to humanity, yet still push forward developing it as fast as they can.
Others appear to be in common modes of willful denial: hubris or salary-depends-on-not-knowing syndrome.
"why can't joe-schmo get his hands on this technology", "how can we trust something we can't see and use", etc.
A lot of the capabilities of these models are emerging as people discover them. I truly don't believe you can make everyone happy with this tech, but isn't it better than the general public can at least explore it?
Do people think that nobody was ever going to try to improve on transformers with more compute, more data, and more parameters? We knew splitting an atom was going to cause a big boom.... thats not really how this tech emerged.