You should understand that the people here aren't the ones developing STM32Cube software, nor are they guiding its development, or responsible for it. So venting frustration and sarcasm is fine if that's what you're after, but if you want to solve a problem it's generally not the tone of a post that people want to engage with.
Generally the BLE stuff gets less support here because fewer people are using it.
Loading examples for most boards does work the way you envision. Select the example in CubeMX, hit build and run, and it works. Newer boards are generally lagging behind in support a bit.
If you present the problem a bit more objectively you might get better results. I see you posted an error message, but not the specific steps to get there. Does it compile? Can STM32CubeProgrammer connect? Any other steps you've done to debug? Things like that are useful to know in order to guide debugging. Saying an example "doesn't work" is unfortunately not descriptive enough to yield a solution. There are infinitely many ways for something not to work.