Half of the "bitcoin community" doesn't know whats good for itself.
I trust the Bitcoin Core developers, as they have done a good job maintaining and scaling bitcoin for years.
Whoever wants to use BitcoinXT/Censorcoin/Unfungiblecoin/SuperLongPropagationCoin altcoin, feel free, but don't come back to Bitcoin when your transactions require KYC and AML and miners have to show passports or government ID to clear your transactions.
Yes, there is truth about non technical people that don't know enough. I would hope, if it would come to voting, that these people would simply stay away from voting and not mess around with the things they don't understand enough about.
Of course, nothing in this world is perfect, so this voting wouldn't be as well. I also imagine that there would be people who would try and take an advantage of the system. These are all drawbacks, I agree.
Of course the voting wouldn't be perfect, but it might be better then you think.
to sign a message with a cold storage bitcoin address ( paper wallet ) there's some work involved in doing that securely. you wouldn't expect to get votes from poeple who didn't understand / didn't feel strongly about any option.
also if your voting with BTC or Hashing power, you have a stake in bitcoin and want nothing but good things for bitcoin, if you are unsure which option to choose you might realize that it's better for you not to vote.