Just because you’re filming a few moments doesn’t mean you’re filming the whole time.
Indeed, sometimes whilst resting the outstretched camera-holding arm they’ll watch the video back on their social media upload - with the event still ongoing, or check in online to compare with other videos of it.
Some people even have to stop filming and manually adjust the selfie-stick between shots 😉
to keep on topic, here’s a pic… 😃