They don't explicitly say they generate summaries at any point in the article. In fact I read it and though this was just some fancy RSS aggregator. The way they describe the "daily briefing" is extremely ambiguous.

Many reasons, if this news were summarised by humans I would prefer it, one example reason is with AI summaries I know to look out for hallucinations.

To be honest though that’s not the point. I’m more annoyed they weren’t transparent about their methods than I am about them using AI.