There's no unitary "we" to block further development of AI. There are way too many actors with too many strong incentives to develop it.
Thus in practice you also have to consider scenarios such as "it's a lie and you supported the block, but other actors that are adversarial to you ignored it, and now they hold the upper hand". Given that the current state of world affairs can be described as "dangerously close to WW3", this can also be a very literal life-or-death matter.
Thus in practice you also have to consider scenarios such as "it's a lie and you supported the block, but other actors that are adversarial to you ignored it, and now they hold the upper hand". Given that the current state of world affairs can be described as "dangerously close to WW3", this can also be a very literal life-or-death matter.