The religion has always asked a lot of people, hours of meetings, study, field service, etc., but I think the pace of life is faster now, people have a lot of demands on their time and energy, maybe they are just tired and it's getting to the meeting itself is all they can manage.
And the organization doesn't seem to give any thought to making the meetings enjoyable or rewarding in any way, they are dry, boring and predictable. It's like the old joke "the beatings will continue until morale improves".