I have a 2015 LEAF, bought new, and been generally happy with it.
It did need a ($0, fully covered under warranty including a loaner car) warranty repair on the battery when a cell went "half bad". Car was still drivable but with poor range. They disassembled the pack, replaced the 2-cell module, and the car is back to normal now.
If it was our only car: no way.
If I had to drive 50 miles on a typical day: no way. (It can easily do 70-75 miles, even at 5.5 years old, but if I needed 50 miles as a baseline, that doesn't give me enough slack. My typical commute [pre-COVID] was 15 miles, which was perfect.)
If it didn't come with $10K in government money in the trunk: no way for me. (I'd have bought something else used, rather than buying
any new car.)
Since I do all the (non-warranty, non-tires) work on all our cars, the LEAF has been a dream. I've had to add washer fluid 3-4 times and changed the wiper blades once. It's been a real maintenance nightmare in that regard.
No data/info on the Kona, so I can't easily compare/contrast, but I've been happy with the LEAF. If I were the type to spend more money on cars, I'm sure I'd like a Tesla Model 3 or S better, but even used I can't see paying that amount of money for a car I drive 5K miles a year.