Just because cell networks are jammed doesn’t take the whole Internet down. Wifi sourced from copper and fiber networks will continue to work.
And Jamming isn’t some sort of scifi superpower, plenty of devices will connect despite the attempts to jam. Those in closest proximity to the jamming source would be most affected.
So don’t make leap that “videos getting published to Telegram” = “No jamming was occurring”, because one doesn’t prove the other.