The cultural left is a hodgepodge if smaller issues under one larger umbrella. You’ve got people who care about racism, climate change, money in politics, access to abortion, etc. All of whom are trying to change society in some way to deal with big problems we have. As a result, it’s incredibly messy. The groups don’t always overlap well nor fall in line.
On the other hand, the cultural right is more or less defined by an unwillingness to change society. They like it as it is, and are generally afraid of change. They’re scared even more by the sight of the lefts constant infighting and imagine that it would be chaos if they got their way. Plus abortion and gun control alone keep many of them in check.
They’re generally not defined by a vision for a better America, just a whiter one that doesn’t really change from what we’ve got.
That is not a view that you can build a democracy on. To have democracy, you have to exclude certain ideologies and ideas. This has always been the case and will always remain the case. Some ideologies are antithetical to democracy, and that article espoused one of them.