potentially multiple simultaneously if mom&dad have separate jobs with kids attending classes.
asymmetrical is as antiquated as dial-up. there's no reason for it in 2023.
You don't need more than 10 mb for that though. How often are people uploading 1+ GB? For me at least the answer is never.
Not many are using gigabit upstream, but Spectrum’s 300 megabit down plans in my area come with like 20 megabit up. I’d get noticeable stutter in calls if I browsed the web during one.
Thankfully synchronous gigabit fiber came this year.
If I take a video on my phone and sync it to the cloud that's easily more than that. And if that takes up the whole 10 Mbit, video calls get unusable.