He's implying that certain questions (such as whether or not the UK should be a member of the EU) should be left to the political and economic experts.
What if the political and economic experts disagree with the majority, not just because of their political and economic knowledge, but because they are a very limited demographic and don't even consider many of the things that are important to the people who are not experts in those fields?
Considering what he wrote, I would say we need more referendums, not less. So that people can become familiar with their votes having an observable impact on their lives. At the moment, people feel powerless, so when they're given a vote, they're more likely to use it in anger. Give them more decision making power, not less.