Like you I couldn't imagine saying this to my boss. On the other hand, I could imagine saying it at some meetings at a previous employer, much larger, with many more inter-departmental box-ticking meetings.

Meeting culture is something that varies hugely between companies and industries and sectors. IMO that means that advice like this has limited utility unless you're aware of the differences. There are a few topics like this.

If the person you'd be telling it to is your boss, you probably don't have much sway to change the culture beyond regular feedback loops.