If optimism shapes reality, and helps people progress more quickly, and if progress has brought improvements in health, lifespan, happiness, equality, and a host of other measures that matter, then more optimism is good.
It’s not blind optimism, but it’s not pessimism. It’s the very optimistic belief that things will inevitably go wrong, but that each new challenge is an opportunity for further progress.
Optimism matters. Ideas matter. But yelling “Be more optimistic!” while pointing furiously at the things happening at the top layer misses some important context that I think an appreciation for the other layers can help fill in.
Nothing is black and white. There are layers to this shit. The stronger our base, the faster we can accelerate.