This is obviously false.
If I tell you to build me a house and you do so, I have not built the house.
I can give you requirements, give you feedback during the process, and otherwise contribute to the design, but at the end of the day I did not build the house.
Is it? I mean I can always run to home depot and cobble something together based on books, youtube, and AI guidance, but I know when I need a professional.
I don't think any trade was ever harmed by the existence of hardware stores. Much the same, AI is not harming dev work. It's filling gaps where no product could exist before.
Big tech does not like DIY unless they control it and that's the actual story, not attacking devs and telling them they're obsolete. Why do you insist on avoiding that story and coming back here to argue with devs?