The auto-play video at least is muted, but when you go and press the pause button it... unmutes the video. Then you have to press it again to actually pause.
Fuck these guys and their dark patterns.
You point out a valid problem, but, this is hacker news, and it is completely possible to find a technical solution to your problem that doesn't involve ignoring a major news channel. Try U-block, or ghostery, the combination of which seems to prevent the video from playing entirely on my system.
EDIT: Clarity of phrasing