That might just be an American perspective. It is not standard elsewhere. I just checked all the UK and Canadian newspaper sites I can think of, and not one of them uses Stupid Title Case.
Ah I think you're on to something there - I almost said (and this would explain why) that Bloomberg is the only publication I read that I notice/can think of that does this.
It just has click-bait/spam associations to me since that's where I generally see it: I don't like the look of the title, so I look at the URL, if it's 'amazingwownewsdaily.com' or something I move on; if it's 'bloomberg.com' or something recognisable (-ly good) I think 'oh ok, ugh, but ok' and open it.
