People that volunteer for the organizations that exists to make a profit for an individual (or a group) are obviously being exploited.
Volunteering for such organizations would be like donating time to McDonalds or any other corporation.
When these types of groups make statements like “It’s your event! Give us your ideas!” online, they are attempting to exploit naïve individuals to help the organizers make money.
It’s common sense.
My advice: Don’t get fooled.
Invest your time into activities that benefit you and not the bank accounts of others.