@mike@glyph@mcc It's there to avoid auto play on mobile since you can have limited data.
It's the first thing I did when they added that annoying behavior.
Didn't know it affected the desktop version of the website as well. 🤔
@mike@glyph@mcc beware that at least once it's turned itself back on for me ("teehee! oops!"), and you have to set it on each device, because of course.
@glyph @mcc I found it in my account Settings, "Playback and performance" section.
Under the Browsing heading, there's a switch for Video previews.