Just my observation here, but it seems that the age of the person at the counter plays a big part in the level of service I get at any store, not just parts stores.
I was in the drive-through at a Chic-fil-A in my Ranger, where the restaurant was having a promotion on frozen drinks. I'm super reserved about the kind of stuff I put in my body, so when the college-age girl approached me (she was very nice to me) with a tray containing a sample of a frozen drink, she asked me if I wanted a frozen Powerade. Those are sweetened with high fructose corn syrup which I believe is a factor in developing dementia, so I declined.
She froze. I could see panic behind her eyes. Nobody had told her that this may be an outcome of her offering. Life had not prepared her for this moment. After about 10 seconds, she said, "OK, thank you!" and moved on to the next vehicle. As I pulled forward under the awning, I heard her exclaim to the other girls that somebody "actually said no" to her drink offering, like it was so notable that it caused her to consider that people can make a choice and that not everything goes as planned - or maybe it didn't. Maybe she looked at it like there was something wrong with me, and why didn't I just take the free sample? There is something wrong with me, but that's not it.
Recently I went into the O'Reilly in town, knowing what I wanted. There were two guys in there, a younger guy and a much older guy. When the younger guy saw me come in, he immediately went into customer service mode, queuing up the search on the computer. He said, "what do you need?" and I mentioned that I was looking for the bearing grease. He did the same thing the girl did. He couldn't find it in the parts catalog (I assume because it wasn't a part). He said, "I don't think we sell that here..." and I told him I was going to take a look anyway.
I knew where it was. The older guy came around the corner of the aisle I was on after the younger guy said he couldn't find it, and looked both frustrated with his... coworker? Maybe this guy was a manager? I don't know, but he saw I did know what I was after and said, "yeah, you're in the right spot for what you're looking for," turned around, and disappeared into the racks.
I don't think these kids are stupid. They're showing the same traits as I did when I was learning under pressure, and unfortunately there's nobody to teach them about how the world works, so they're not prepared - emotionally, socially, or educationally - for being an adult. I felt bad for both those younger people, and a little afraid for the future. Some of these grown adults will use the tools they've got and struggle, making decisions based on limited knowledge, and never looking beyond their immediate experiences to broaden their minds.
Others have a chance, but here's the thing. We can't just pass blame and not help this younger generation. We have knowledge they need. We have experience some of them are in awe of, and really want to learn. It's the parents leaving their kids in front of a screen and then the education system frankly burying "the bar" (remember 'raise the bar'?) via NCLB, so yeah, it's on us to teach them the way.
I've been to college. Twice. You know what I learned? Not information to advance my knowledge for the degree I was after, no! I learned that trans people don't have mental illness. I learned that men are inherently pigs and racism is a byproduct of the American Way. I learned that a "professor" can clock entirely out after providing a list of readily available and free media like YouTube videos and open links to online articles that, for some reason cost me $52,000 after nearly 8 years of a 4-year curriculum, so I could get hired by companies that require that special sheet of paper.
I have a degree in both general IT and computer forensics and digital investigation. I use them because I sought out more than just what was provided to me. This is a wild tangent here to say, if this is "college level education" then yeah. It should be free.
The whole system is broken and we're all a part of it, but in my opinion none of us are at our best unless we're helping someone else be better. That older guy at the parts store could've taken the time to show the younger guy the ropes. That girl with the samples needed more instruction because for her, it wasn't "common sense". That would require enough people to know for it to be common.