The sad truth is that it doesn't matter if you agree to a council or not... It doesn't matter if I agree to a council or not...
If they don't change the consensus algorithm, but merely do things like not including certain transactions, not relaying certain blocks, not connecting to certain peers,... they don't need our permission to do so.
If they start changing the consensus algorithm (like, for example, switch from POW to POS), they'll most likely create a major fork between them and the miners that did not follow the "council"'s advice.
The truth is that if they do this, the only thing WE can do is start using a different crypto currency, or in case of a fork: keep with the "original" bitcoin and exchange their forked coin for "real" btc asap...
The way we vote is with our wallets: look at bitcoin cash: there was nothing we could do to stop the fork from happening, since Roger did not need our permission to create a fork... But we, as a community, decided to keep using the "original" bitcoin, and not his fork... And at this point his forked altcoin is worth only a fraction of our original coin