I sent a message to a person in my area inviting and welcoming them to our newly formed local meetup group. Their response was "Why should I? Who are you to tell me what to do? Let people decide on their own and leave them alone!"
Personally I think for a movement to have strength, the more the merrier. Others I think are feeling there are too many cooks in the kitchen. Is this a normal side effect of grassroots movements? Is this happening in your neck of the woods?