A framework producing a Hello World application, even if it has a GUI, with a double- or triple-digit size in MB and memory consumption on the same order, is doing something very wrong.
Java lets you include only the parts of the JDK that you need for your app. These parts are called modules.
Unfortunately, all modules MUST include the base module (java.base), which is ~22MB. And if you add a GUI (java.desktop), that's another ~13MB. And since the linked example uses Java FX, there is yet another layer on top of that.
Java is doing a lot of work to bring that number down by a lot. More to come.
Last time I checked, jlink tool refused to make use of those "automatic module" dependencies when creating an image.
And your comment about `jlink` MIGHT be true if your application is nor modular/ does not use modules with a well-formed `module-info.java`. I haven't tried an automatic module in a long time. If your application is modular, everything happens as expected. I do this for all the builds for all of my projects. Last build from last night confirms that it still works, and works well.