I read it different. From personal experience alone I watch a lot of videos on FB fully without ever clicking to listen the audio. And several content producers are adapting to this by creating video where audio is optional. With subtitles or sometimes it is nothing more than a "animated slide presentation". But also videos like highlights of NBA games.
You can say that any time anyone says anything (and on HN someone usually does), but if you think about it for more than half a second, actually it is more than a single data point if multiple content producers are optimizing video for silent viewing.
It's a conversation-demolishing verbal tic, along with incantations about causation and correlation, straw people, ad homunculi and the like. Avoiding these helps conversations stay conversations rather than tedious protocol.
Some of us find conversations that devolve into these things to be incredibly frustrating to be part of. People love to share anecdotes about themselves but rarely care much for others peoples' anecdotes.
Before sharing that you prefer pepsi over coke you should ask yourself whether you care at all that some stranger on the internet prefers coke over pepsi. Assuming the answer is 'no', then why bother sharing these sorts of things yourself.
