I believe Kia service is the locus of several problems.
Surely the worst of which is Kia dealerships specialty is cheap cars, cheap service, cheap, cheap, cheap. This leads to the owner wanting cheap labor and minimum investment in their training to keep costs down.
And then with all dealers
Their desire to sell new cars steers them toward making you unhappy with your current car if they can, without totally alienating you. Can't fix it. Won't fix it. Don't know how to fix it. Don't care.
Normally workers are about average, due to the Peter Principle. "In a hierarchy every employee tends to rise to his level of incompetence... in time every post tends to be occupied by an employee who is incompetent to carry out its duties... Work is accomplished by those employees who have not yet reached their level of incompetence."
But the virus has skewed that because as businesses shrank / shut down, the newest employees were laid off, then old employees and as things began to pick up again the people available to hire were untrained and the odds of your encountering a competent experienced employee are even worse than normal.
The current younger generation seems to lean toward getting their satisfaction from obtaining stuff. Satisfaction from a career of being so skilled at your job you can make it look easy, earning gratitude and respect isn't on their radar.
The arrogance problem W. Edwards Demming ran into. Management is so arrogant they believe they can design and operate all the processes of their business, better than anyone else on the planet. This flies in the face of process improvement where EVERY SINGLE PROCESS CAN BE IMPROVED! A successful improvement could be by making the process output better, or by making the process cost less. But the goal should be both. And usually is. When Demming approached Ford, GM and Chrysler with the concept they laughed at him. When he finally took his ideas to Japan they were embraced and in a few years Honda was outselling the US manufactures and they never recovered. But oddly enough, their arrogance and attitude still remain?
The Kia dealerships are making great money, believe they really have a handle on this and their arrogance won't allow them to even consider the possibility that they could lower costs and provide a better product at the same time. So they aren't going to change. Get used to poor to bad service as the standard. If you find a dealer with great service, good on you. Please help them and the rest of us by spreading the word.