How is a diverse opinion a threat to democracy?

If the opinion is that there should not be a democracy, then that is a threat to democracy.

Excluding a portion of the population from the polls

They are not excluded. They are free to vote for a party that is in line with the constitution.

its almost exclusively a phenomena specific to the left…

I don’t even know what to say. In which world are the far-right, fascists and nazis known to value opposing views? Are you serious?

I read in another article that it is just supposed to be a first test of the feature before the global rollout.

The original contract with the company RWE was made in the 1990s and included destroying whole towns for the coal mine, which was planned to be in use until 2038.

What we see now is a compromise between RWE, the state of North Rhine-Westphalia and the federal government to save the remaining towns and close the mine earlier (in 2030). The wind turbines are from 2001 and are nearing the end of their lifecycle.