It actually depends. Sure there's plenty of ones that are complete garbage, but well structured ones work well, especially in two situations: 1. For people who have 0 coding experience to get introduced to how to start coding and where to look to learn more 2. Experienced devs who need a good overview of a new technology that they can further explore more on their own. It's not a bandaid, do a bootcamp and you'll be gods kind of a solution.