Same here. However for me it's not only an annoyance, but since I'm on a metered connection (LTE with severe throttling after 50 GB only avoidable by buying extra volume), this is costing me real money. Opening a Bloomberg article in the background will happily autplay a series of videos I may not notice. And that's with uBlock Origin installed.

I just opened such an article and in the 5 minute window since I did so, the page consumed a cool 100 MB for a 2:20 video. It obviously gets worse with longer videos.