I think it needs to be looked at as a face to face meet, but behind screens. Which it is, but some people might find the mindset a bit different. Every time I've gone to a meet I've been nervous, even after the first time when I knew most of the lovely people who were going. But once I'm there, sat down, talking starts - that's time to relax it.
this, to me, is the same idea, it's only that the "venue" has changed. I'm probably still gonna be a little anxious before I speak to people, it's perfectly normal. But the expectations for who turns up and so on, that shouldn't shift because it's a Zoom call. The responsibility doesn't lessen because it's not in a public place - heck, the level of responsibility is actually higher as a result. I wonder if smaller groups or something wouldn't alleviate some of those fears, rather than having everyone turning up at once - which would be great, but also overwhelming for some people - myself probably included.
ETA: Years ago I used to do Skype group calls, they'd be left constantly running with a group of maybe 30 people, but only ~10 would be online at any one time and not everyone would be talking while online, say if they were working or something. But even 8 people, talking on voice-only chat at once, it gets confusing and can be hard to follow. That's not going to be any easier with video running as well.