You can do this with a custom filter list in Ublock Origin, no custom extension necessary.

I'm thinking something that would actually use HN's "Hide" feature, so other stories will populate the page after the AI ones are hidden. Is that something uBO could do?

	▲	icdtea 2 days ago \| parent [-]
		You make a good point, I don't believe so. I currently block most LLM/AI threads and some pages can get quite sparse. Would love to check that out if you get around to putting that together!