You should always assume headlines are hyperbolic, and 'verb your own noun for cheap' headlines are always offering a way to make your own version of $expensive

You should always assume headlines are hyperbolic, and 'verb your own noun for cheap' headlines are always offering a way to make your own version of $expensive_thing for hobby prices, not to provide a copy of $expensive_thing. If you a headline saying 'make your own James Webb Space Telescope in a weekend' they're offering a project that leverages some tech concept from the JWST, like mirror arrays or a particular sort of sensor. They're not promising that you will be able to build a space-capable telescope the size of a semi truck.