Wrong, as usual. Certification is a priviledge of membership.
You fail to explain how giving away certs to non-members would increase membership, as you claimed it would.
What funds would the orgs be getting from non-members?
So you're proposing that non-members be allowed to cert, as long as they pay enough for that priviledge to cover the cost of obtaining insurance that will pay for any incidents they cause during the course of their rocketry activities
-- and you want permanent certs with no renewal requirement, which means lifetime insurance. Hmm, I wonder how much it would cost for permanent liability insurance to cover an unknown number of non-members for their entire lifetimes? How much would the orgs have to charge non-members to cert, in order to cover that cost? Five thousand dollars to cert? Fifty thousand?
Ok, so now you're willing to accept 10 year renewals. How much will ten years' coverage cost?
There are no gains in your scenario, except to the deadbeats who want a free ride at someone else's expense.