It's impossible for people to know about every topic. That was true in Plato's day and is dramatically more true now. People defer to what someone on TV or Tiktok told them and have no time to look into facts or primary sources.
Direct democracy would get you solutions that sound emotionally appealing but do not work. That or gridlock where you can't get 50% to agree on anything.
If you ask people "do you want A, B, C, or D" a majority may well say to do each. If you only have budget for one, getting them to come to consensus is impossible at the scale of direct democracy.
> Direct democracy would get you solutions that sound emotionally appealing but do not work.
We have those now.
Representative systems vest political power into concentrated points of influence. The reps are often as uninformed as the citizens. The US just had some infamous legislation pass that representatives didn't even read, and publicly stated so.
The system also makes reps uniquely vulnerable to targeted lobbying, corruption, regulatory capture, and threats. I find much to be faulty with opaque dealings with a few key individuals.
Direct democracy mitigates these issues. Influence must be exerted through broad, public persuasion. This forces special interests to operate in the open, creating a higher and more transparent barrier to subverting the public will.
People don't bother looking into stuff because they know their opinion, and their vote, doesn't really matter. Treat people like children and they start acting like children.
For some contrast Switzerland has a sort of defacto direct democracy in that citizens that obtain a relatively small number of votes can bring any issue they desire up for vote. And they have indeed brought issues like Basic Income with the suggested proposal of every single Swiss adult getting around $1700/month. That's something that would likely destroy any country that passed it, but it would likely pass by an overwhelming margin in the current state of the United States. But in Switzerland where people actually do have real power, and responsibility, to determine the future of their country, it was rejected by 77%.
Instead, back in the states we can look forward to our true political power of getting to choose between Dumbo and Dingbat for our completely unrepresentative representatives.