I also have to control everything about the environment (lightning, background, microphone and camera quality, etc), which is a pain compared to a conference organiser providing technical support.
So it is much more time-consuming to record the presentation compared to preparing it for live delivery.
I agree that pre-recording is better than live over video, for the reasons you mention (otherwise, there is nothing you can do regarding any stray helicopter or your router having a bad day).
I hate interacting in chat. Everything feels fake and wrong. People always need to pay attention to everything, lest they interrupt someone starting a sentence or trying to intervene (any latency is really bad in a vocal discussion). This is a bad imitation of chatting with other people over a beer.
The ability to re-record is a mixed blessing: it is a time sink and it is very difficult to be satisfied with the result if you are even mildly perfectionist. It would be better if we had access to professionals to record and edit talks, but we haven't.
That said, it's gotten easier over the past year. My office is pretty much set up as a studio now with lighting, mikes, camera and so forth. And I've learned things like better eye discipline. I've also learned that, sure, I should do a retake if I really flub something (or, umm, forgot to hit the record button). But for anything longer than a very short clip, it doesn't need to be perfect.
But, then, this is one of the things I do for a living so it's been worth the time and money to get things right.
- I can do some different things when I record and edit such as inserting clips that aren't just a slide and me as a talking head. (Though having a thumbnail of the speaker is a practice I hope we keep versus just talking to a full screen slide.)
- Reduce the likelihood of network-related or other issues at my end.
- Can interact with an audience in real-time in chat.
- Can redo sections that don't come out well.