The worst one was Scientific American, I loved that one, and it dove worse.
It honestly seemed like it was written by some recently-graduated (so like a twenty-something) tech enthusiast. A lot of willingness to spend moneys on the latest gizmos, a lot of advertising, very little interesting pieces (and none of them went any deep on the topic).
It's popularity stems from its early significance; Ars is an old, old website by standards of peers like The Verge and it did used to have much more frequent high quality technical writing. Since Conde acquisition it's definitely veered more mainstream (exactly like Wired did too) IMO. I certainly don't think the original Ars crowd imagined they'd one day be a Conde Naste "brand".