Well, a more accurate comparison would be if you made a chair 20 years ago, and now no one makes chairs anymore because we have all become robots.
If there are still fleshbags who need chair, the one created 20 years ago, if properly cared for, works just fine.
Now, if I used a piece of rotten wood for one leg, because I couldn't bet bothered to go fetch a new plank, this is debt that will need to be paid in the form of putting additional work to fix said leg later.