It’s a structural trap. These tax free non profits remain so only by the whim of the tax administrators. Things are somewhat easier today as there are tax courts which are binding on even the IRS. But it would not be beyond a Ratly IRS to attempt to force every single one to go to court separately.
What I’ve wondered is, why does any organization need to be tax exempt and non profit?
Why not organize without it and let each member be responsible for their own activities?