The thing is even if you aren’t directly producing C02 when you turn the laptop on, you are at some point in the supply chain.

Mining, processing the ore, transporting the materials, producing the energy your laptop uses, etc… at some point C02 will be released.

Even if you have an all nuclear grid there are a bunch of things that go into supporting those plants that still require C02 to be produced. (Chemicals needed to support operations must be made, materials for the plants to stay operational must be made, distribution lines must have trees cleared, etc…)

I haven’t seen in any weather patterns that comes close to an existential threat to humanity.

It seems to me there is a contradiction in your logic, if C02 isn’t an existential threat to the biosphere then it isn’t to humans either. I put my money on our ability to engineer solutions even if there are drastic changes to the climate.

C02 is plant food, all it’s done so far is make it easier to grow crops and it’s made the world a little greener 🤷‍♂️