Agreed, partially. However, the "techbros" in charge, for the most part, aren't the researchers. There are futurologists who are real scientists and researchers. Dismissing them smacks of the anti-science knuckleheads ignoring warnings about the dangers of not wearing masks and getting vaccines during the pandemic. Not everyone interested in the future is a techbro.

You seem to have this optimistic view that humanity is invincible against any threat but itself

I didn't say that. You're making assumptions. However, I don't take AGI as a serious risk, not directly anyway. AGI is a big question mark at this time and hardly comparable to a giant comet or pandemic, of which we have experience or solid scientific evidence. Could it be a threat? Yeah. Do I personally think so? No. Our reaction to and exploitation of will likely do far more harm than any direct action by an AGI.

True. But we are still talking about what is essentially an alien mind. Even if it can do a good impression of a human intelligence, doesn't mean it is a human mind. It won't have billions of years of evolution and thousands of years of civilization and development.