Except: In every practical application that Joe Average has ever experienced, the battery memory problem was only ever a mere myth. (A widely-parroted myth, but a myth nonetheless.)
I feel that your example portrays the opposite of what you may have intended it to portray.
What actually happened was that people went out of their way to do a thing that not only did not improve the overall longevity of their rechargeable batteries, but may have actually made it worse.
This might be "well ackshully" territory but the memory effect those NiCd/NiMH batteries were experiencing was very real but temporary. It could be fixed by doing a deep charge/discharge cycle for each cell. It worked great if you could use a smarter charger (I reconditioned so many cylindrical cell batteries like this), and was impossible when charging in the phone. Which made the temporary effect quite permanent.
Whatever you want to call it, the damage caused by certain usage patterns existed and was visible to the users. So they learned how to generally maintain the battery of that expensive device to keep it usable for longer. I have no reason to expect people are less capable to do the same for a car's battery, now that everyone is more tech educated and cars are smart enough to tell them what to do and when.
Right. That's still a thing that happens in series-wired batteries.
Voltage depression of individual cells seems to correlate more with deep discharges of a battery (perhaps combined with differences in cell quality within that battery) than anything else.
And deep discharges were what people were deliberately doing to fend off the evil spirits of "memory effect" probably made the problem worse.
I feel that your example portrays the opposite of what you may have intended it to portray.
What actually happened was that people went out of their way to do a thing that not only did not improve the overall longevity of their rechargeable batteries, but may have actually made it worse.