That's a ceramic disc, which as you know is a completely different kettle of fish. It's like comparing a 4 stroke to a rotary: Both engines, both provide power, but are very different animals. The original PCCBs weren't great, true, but it was a tiny percentage. Ultimately anything can fail, regardless of cost, but I'm not sure that helps your point at all.
And the trouble with being wrong about one thing which you speak definitively, is that is then weakens your credibility.