Instadeath without warning would be poor gameplay, and everyone (beginners and experienced players alike) would be right to complain if it was implemented like that.
If black holes were designed in such a way that you could be given a fighting chance of survival (like the interdiction mini game), then I doubt many people would complain.
Oh agreed, and that's the point, if I equip my ship, keep an eye on what systems I am jumping into, maybe if I am extra cautious and de-throttle when entering a BH system, many ways to avoid spaghettification, but if I just blindly jump from system to system without checking what the star type is or taking any precautions then I will probably be killed at the first black hole I encounter.
Many years ago when I first started playing I made a WD system in the bubble my home system, about every second time I jumped in to visit my home station I hit the WD exclusion zone, that was before they had jet cones, now I can jump into WD, NS and BH at full throttle in my Phantom and I never have a problem because I have practiced and know what I am doing. I would expect if I was a poor pilot and hit the exclusion zone of a BH, WD or NS I should suffer serious damage, like if I did it twice it would destroy the ship, any ship! I might still escape alive if I made sure I was equipped with AMFU and heastinks and hull repair limpets and took proper care when jumping out, but a beginner explorer not properly equipped and prepared might not escape.