If you are busy going to meetings and field service, there are two effects: you are present for the constant repetition of important points (such as: obey the GB without question) and you have little time for anything that might cause you to drift away. The issue they have with Zoom meetings is that they require so little preparation and participation. You get back a lot of time, and no one will find out that you didn't prepare for the meeting. If your field service consists mostly of writing letters, making calls, and standing next to a small magazine rack, you get back a lot of time as well, and are no longer bothered with having to practice the sales pitch.
Less time being indoctrinated and more time being free to think for yourself is a sure way to get someone to the point where they realize that they would rather be doing anything else. Then you start to connect the dots. Why don't I want to go to the meetings/field service? Because it sucks. Why does it suck? Hmm... this is a long list of reasons...