I agree with most of what you say.
I still have the original factory oem battery in my
2001 Elantra. It has run down a couple of times, mostly when left for two weeks without starting in airport parking lots.I invested in an emergency back up starter/battery combo for about $40, mainly because we get power outages with winter storms, and coupled with a cheap inverter we can at least have a radio and small lamp lit. I keep it in the car and have had to use it once so far, one day I will have to replace the car battery, either at the dealer, or take measurements and see what Kragens have.