>Because if you don't, then you will be one of its targets when it does, inevitably, come into being.
Only if you don't spend 5 minutes thinking about the Self as a concept. Resurrecting someone by perfect simulation is a cool plot device for a novel like Altered Carbon (which ironically is really about wealth inequality) but not a serious hypothetical.
Even if we ignore that, no, super intelligent MechaGrok17 cannot make a perfect copy of you posthumously from your embarrassing Character.AI chats and IoT toilet data, the copy it still wouldn't be YOU. It would (supposedly) think and behave like you, but for all purposes it would be the Basilisk torturing a future stranger, or your descendants. I'm very much a fan of people not being potentiality tortured, so the rational action is to stop the creation Basilisk, or even just delay it so you aren't around for it. There's a bunch of other big assumptions that makes Roko's Basilisk really stupid, but they are unimportant. It's just theory crafting, like talking about the lore of video games or marvel comics. It doesn't help you understand their real motivations.
Roko's Basilisk is just recontextualized protestant Hell in a sci-fi coat of paint. It's the childhood anxieties of American nerds about hell and sin. The problem is that they are still culturally protestant. God doesn't exist or he's hands off, but in their minds there's still a open position for the wrathful and proactive God. If you think that you actually can create God for realsies, your very rational™ prediction of its behavior will coincidentally line up with your childhood fears.
Why is the spooky AI mad at you? Because you didn't worship it correctly.
Why do you obey it? Because if I don't it will torture me for eternity.
How will it do that? God is omnipotent, don't think about it.
Why don't try to stop it's creation? “I am the Alpha and the Omega,” says the Lord God, “who is, and who was, and who is to come, the Almighty.”
All the scifi scaffolding and stuff like acausal trade is paint over Timmy's first panic attack on Sunday school 30 years ago.