At this point, any site that is posting multiple articles within a day is pretty safe to assume it is LLM content. The sites with actual journalists will have a much lower post count per day. There's no way a site staffed by intern level people writing that much content had time to investigate and write with editorial revisions. It's all first to post, details be damned.

Unfortunately, there's been a race to the bottom going on in internet journalism that has led to multiple-posts-per-day from human journalists since long before LLM posts came on the scene. Granted, much of this tends to be pretty low quality "journalism," but typically, Ars was considered one of the better outlets.

Lower than 2?

Uhhhhhh have you visited The Verge?