Are you objecting to “our” on the grounds that we didn’t build it? Because most people use “our house” to mean the one they occupy, not limiting it to only what they built.

This is pointlessly pedantic. You know full well what the GP is trying to say, and you are being willfully obstinate by ignoring the obvious context. We are rendering the world uninhabitable for a frightening number of species—most likely including our own—through environmental collapse. Instead of bothering to discuss that point, you've decided to try and derail the conversation by playing semantics and arguing over the meaning of "destroy" and "our" and "planet".

If you're not willing to or capable of engaging in these types of discussions in good faith, maybe Hacker News isn't the site for you.