I never said that having citizens vote on legislation is less democratic. As far as lobbying, both Uber and unions do it and when unions do it, it's far more democratic yes.
The reason they have such a special lines is because unions represent tens of thousands of voters, and politicians care about getting their votes. They are a very strong force in deciding elections.
Tens of thousands deciding what’s law in a state with tens of millions sure doesn’t sound democratic. This is the definition of special interest and is the opposite of democratic.