I agree with all of that.

However, that’s not to say that many designer jobs will be going away, simply because for many cases, cost beats quality. We’ll just have more things with a much lower quality.

You can compare it with mass manufacturing. While some things are better had than not, even with low quality, we’d probably be better off with some things made to last, in lower quantity. But for 99% of the population, e.g. low quality clothing is the norm.