From my notes in 2010
If someone is eating - no one wants to watch each other chewing
Unless it is a (rare) working lunch, you don't eat in a meeting
<span class="italic">In large meetings when most people are just listening </span>✅
When someone else is presenting in a meeting or the meeting is being hosted in person and the rest of us are dialling in (the tech involved would usually mean either you'd appear in vast size on a display screen or alternatively no one is looking at a screen of people at all)
Acceptable. But just shows you're cosplaying at remote working.
If your Wifi is playing up and the bandwidth isn't there (and this applies to some people more or less all the time - they'll explain to new people generally)
If you work remotely, you make sure you have resilience. Use a a backup 5G router, or your phones 5G
If there's disruption where you are and the visuals would be distracting - eg pet has wandered in
See my point about cosplaying remote working.
If your camera isn't working.
Should be so rare as to be insignificant. Faulty kit gets swapped out by courier
Otherwise they're on but there is scope for individual adjustments in line with the law obviously. I'm sure most people have a bad day every now and then and keep them off but that's rare. ✅
My recommendation (which was accepted) was that homeworkers should be provided with a dedicated internet connection to ensure it was provided under commercial terms with a grown up SLA, not the "in a weeks time" you get with your domestic contracts. That's why I had a BT and Virgin connection for 6 years 😀