I also used to think that work meetings are low information density.

Then I attended our first parent-teacher conference at kindergarten. It was incredible: 2.5 hours of discussions and ridiculous complaints ("why does my child has to put on splash pants on rainy autumn days, putting them on is just such an ordeal!!"), and not a single bit of relevant information was transmitted. Not a single decision was made. I went home in utter disbelief.

Currently, our parents' council is trying to organize a party for the children who will be going to school after summer. What should've been a TODO list where parents can write down what food they will bring and who will help with what escalated into 2 evenings of discussions, a Skype meeting, and a Whatsapp group where several fractions of parents have been fighting over whether T-Shirts should be printed to celebrate the end of kindergarten for over a week now.

Nothing made me appreciate the information-density of engineering meetings like attending parent/teacher or sports club committee meetings.

It's like... people, is your time not worth more than this thirty minute bun-fight over summer clubs?

Still hate meetings though.

I don't think the existence of "even lower information density" attempts at communication justifies the low density of work meetings, but you're right--trying to communicate anything to more than one person at a time in a child-focused setting is close to impossible.