[porphyra]

You can say that about any new standard. With that logic we'd all be stuck with knob and tube wiring.

[ElevenLathe]

Did cars ever use knob and tube?

[porphyra]

Not that I know of --- it's a figure of speech to compare it to an standardized method of electrical wiring in buildings that eventually got replaced with better standards despite similar concerns at the time.

[bluGill]

Well technically a spark plug is the tube part.