The Luddites want to deny that science has any validity. They want to deny that the observable is real.
There is no global warming. Pollution is not a problem. The fact that most of the World's vertebrate biomass is human has no negative implications for the future.
When I was born, the human population of the World was a little less than 4 billion. A hundred and fifty years before I was born, the population was still a little under 1 billion. Currently, six decades after my birth, the population is fast approaching 7 billion. These are facts. The documented rate of population increase has real implications for the future of human society.
According to the Luddites, the problem is that the birth rate is not high enough. According to some reactionary political and religious authorities, contraception and abortion should be outlawed. Women should stay home and have at least 7 children apiece and a lot more if they can. What's interesting is that a lot of people think that it's a fine idea. They think that the World is still vastly under populated. They must have listened to too much John Lennon music when they were young.