Frank the membership is voting every year but it is with their check books instead of ballots.
The Decline has been the same regardless of who has been at the helm or which groups are infighting.
I have said before that the IMAA as a SIG has decreasing value since the advent of the internet and AMA sanction of large scale meets bypassing IMAA.
ARF models plus plug and play systems pretty much do what IMAA did in the beginning when the information about engines larger than a 60 and wingspans above 72" were uncommon.
But back to the bottom line, when the well runs dry or goes to a smaller trickle all the bickering about who should do what will go away.