That list looks similar to what one might see in the armed forces meaning that as military members troops cannot lobby, organize protests and such.
Obviously you interpret this to mean that participants cannot go to church....but could it mean that participants cannot try to make a church within the organization, or cannot represent the organization and lobby, protest, etc?
That's what I'm seeing. However, it may not be the intent of those who support it, but Satan will be glad to see large groups of young men and women having their witnessing and worship time limited. It's a sinister manipulation of people's time and energy.
Unable to resist stating the obvious, when something is required than it isn't volunteerism.