Here is my take on the clutch-throttle coordination. The problem seems to lie with the electronic throttle and engine management of these cars. When you let go of the clutch pedal to get the friction point before giving gas, if you just let the idle speed fall off below a set value of like 750 RPM, the engine is programmed to stall. In the past, most engines could be bogged down to say 500 RPM when starting without stalling, but not this one.
This is how I found out my '08 Sonata manual is set up. And after 2 and a half years and 35000 Km, I still regularly stall it although I've been driving manual transmissions with no problems for more than 25 years.
So you have to give gas first to build revs and then release the clutch, just like an amateur. If you don't, you stall, especially if the car is completely stopped with the engine warmed up or when starting on an incline.
Maybe Hyundai/Kia should issue a TSB for a software reprogramming for those cars...