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I read the article as it finally arrived. There is a huge disconnect between editorial and the photos from a Peoria, Arizona electrical inspector. None of the photos in the article are related to the article. Rebecca Jacoby's fire has no supporting photos but the story is credible and I have seen exactly the damage described.

On another point I said in one reply that parallel and series arcs don't draw enough current to trip a breaker. 1/2 wrong parallel arcs can draw a lot of current as they often manifest as a ground fault or wire to wire fault. Parallel arcs can cause OC devices to blow at their instantaneous settings. Series arcs are usually around 5 amps.
The illustrations are generally attributed to arc faults but it looks like the article has just added them as window dressing.