It’s not techno-optimism. It’s techno-capitalist optimism.
It’s the kind of optimism that doesn’t see things like the mass extinction of species as within its scope of problems to solve, presumably because we could eventually build technology that would obviate any need (from a human perspective) for other species to exist.
I imagine instead a completely different kind of techno-optimism: one that leads to the widespread distribution of ever greater life-enhancing technē. Call this techno-ecological optimism.
(From a mastodon post of mine over a year ago that recently popped up in my feed.)