I am a government. 20% of my population are tech savvy, a different very minorly overlapping 20% are criminals. Given the law of distributions this is probably pretty close to true.
Now, those 20% of criminals are very varied in their delights, violent, sexual or theft. Serious crime such as pedophilia or terrorism is very low probability overall.
However, as a government, I can't be seen to be weak on those extreme positions because they are highly visible; the 80% population simply will not allow me to argue in good faith for protections which _might_ help such extreme criminals operate easier.
The technical feasibility of good opsec for criminals is usually very low, and the FBI has a decent track record of targeted surveillance.
But I, the politician, cannot communicate effectively with 80% of people, when the populist says that I am weak on terrorists and pedophiles. I only weaken my own position and allow the populist access to power, because 80% > 20%.
--
The biggest benefit and the biggest problem with democracy is that everyone has a voice, even the uninformed.
If you listen to all politicans by numbers there will be liars and opportunists among them; then you're not uninformed, you're misinformed, and that's arguably worse.
Alternative voting systems (e.g. ranked choice systems) aren't some sort of political panacea, but they could help a lot with this issue. A populist thrives in an environment that does not support nuance. It would be harder for them to be successful if they were running against, say, 6 viable opponents rather than 1.
I hope we can address some of these major problems with democracy, because the alternatives generally aren't great.
EU Election system is _literally_ one of the fairest systems in existence[0] ensuring that every party get some measure of proportional representation. Compared to English First Past the Post (minority rule, and 2 party systems) or Scotlands Single-transferrable vote (which is still winner take all); but D'Hondts method means that people can be safe in the knowledge they'll be represented and it's proportional to the input.
It's not "perfect" but it's _literally_ the best humans have come up with.
[0]: https://en.wikipedia.org/wiki/D%27Hondt_method
[0.1]: https://www.youtube.com/watch?v=yhO6jfHPFQU
CGP Grey did some videos on these:
FPTP (England): https://www.youtube.com/watch?v=s7tWHJfhiyo&list=PLNCHVwtpeB...
STV (Scotland): https://www.youtube.com/watch?v=l8XOZJkozfI&list=PLNCHVwtpeB...
D'Hondt-esque (EU): https://www.youtube.com/watch?v=QT0I-sdoSXU&list=PLNCHVwtpeB...
2. Range voting is the best humans have come up with.
Picking nits, but isn't Sainte-Laguë better?
Anyway, I think GP was arguing that no matter how fair your voting method, it's of limited use if important concentrations of power are not covered by it.
[0] Mandatory voting, ranked choice, etc - Australia's voting system is as close to ideal as you can get
The minority of the population who are tech-savvy enough to know this is going to be a complete disaster are unimportant in politician's eyes - no-one listens to us nerds in the corner doing nerd stuff.