I can assure you that, for the vast majority of the population, it has the intended effect of keeping the calculator from storing digital cheat sheets.
I do not disagree with your assessment, but it was a great motivator for me to learn z80 assembly. I just wish I knew how to use the stack. Modern me shudders at how horrible that code was - it worked, but god damn was it ugly. I still have the Z80 assembly reference manual on my bookshelf. It just hasn't been opened in close to 20 years. I've never had a physical x86(_64) reference manual, but I usually keep PDFs handy - just in case while debugging. I think I still have Atmel AVR & Motorola 68k docs physically somewhere...
I admire your tenacity too.