I don't think "no one" will even happen - nor with potato, nor with mechanical skills. There are books which tell how to do all sort of things, starting from the refining metal from ores, and there are people reading them. I have no doubt that minute details will be forgotten, but they were discovered once and could be discovered again if needed.
Yes, horses were replaced, but go outside of city and there are many horse farms, and some of them offer horse riding classes to general public. Should something happen to the cars, the knowledge will come back. Same way, even if an average JS programmer has no idea what "differential pair" stands for, there are plenty of people who _know_ what this is, and can at least read the eye diagram.
And yet people still do. So the problem being discussed is demonstrably unlikely compared to the more likely benefit of significant scaling potential for humanity
Back to AI: Would you agree that the problem comes when no knows how to think any more, not when most people don't?
Personally, I'm pretty concerned about both. The fact that many people don't have basic survival skills like sourcing their own food, safe drinking water, and heat. And the fact that that many people lack basic thinking skills: ability to detect misinformation, or deal with the challenges and inaccuracies of flaky AI.
In an ideal world society everyone who is capable has a higher level of training in both. But under modern oligarchic capitalism there are advantages to ensuring that people have neither skill: survival or thinking.
