- Conferences are usually not paid, except expenses. In fact the "compensation" for a speaker is to be able to travel and attend in person. Maybe for some this is a drawback, for me it's not.
- In person conferences allow you to meet and network with other speakers. Online conferences do not (unless you count "come to our discord" as networking, I don't)
- The value I get from conferences is also interacting with the public and listening to them, outside of the talks.
- I also don't really get any of the promotion value for my company, which obviously I represent.
In short, I understand they are cheaper to organize but the value is simply not there at all, so I will not speak at them, attend them, or sponsor them.