I (dev) and my team certainly do.
To that end, I've started putting a standard caveat at the end of all my team meeting reminders on chat: Everyone is optional, but everyone who goes must have read the agenda and linked pre-reading.
First couple of times I did that, some people self-called-out as not having read the notes (after asking questions specifically addressed in the notes). After that it's been mostly good. People have thanked me for my efficient meetings, but all I did was to make people read the agenda :)
"Therapy" meetings certainly have their place, and I've personally grown a lot as a person in those. We have one (retro) every two weeks. But if most meetings in your organization are better thought of as therapy meetings... well, it's no surprise people don't do concrete things any more.
This is the biggest problem where I've seen companies try to do this. The C-level and senior management team make a big fuss about how the company is having too many pointless meetings, they need to be effective, short and have agendas... and usually you can count in hours the time before the one of the exact same senior managers has sent a 2 hour, 20-person invite titled "project catch up" with a blank body.
(You can probably generalise this to many company initiatives, not just the ones about meeting habits.)
It mostly doesn't work.
Three places I worked had tidy kitchens. None of them had these labels, but more importantly: in all three of them management would fix it if others didn't. I guess most people only see their bosses boss tidy up a couple of times before they realize everyone is supposed to do that.
People seem really busy and tell me they are too busy to plan their meeting or prepare for mine. It’s a viscous cycle.
They did a company wide training on effective meetings.
Set agendas, notes, and etc were all part of their training. It was great.
I never saw a single person do those things... not the VPs, not the CEO, nobody. I did it for my meetings as a sort of invisible act of defiance, but nobody ever read them before the meeting and most didn't know meeting invites came with anything other than the time, date, location info :(