I sometimes just need to mute something for a second that I'm otherwise listening to. Or I'm switching between multiple sources, and don't want like 3 or more playing at the same time.. usually all on the same domain. I don't want to have to actually go to the tab and mute it. I'm frequently muting and unmuting things that way to the point that even if its the only source of sound, I still mute by tab instead of just turning my computer volume off sometimes out of habit, so its a deal breaker.

I think this just says more about the perils of embracing untreated ADHD than the internet itself.