All this said, I honestly don't mind the idea that facon is known as vegetarian bacon. Bacon has its literal, cured-pork type definition, but it also has cultural, culinary identity related to the role it plays in a meal.
So if it's there purely to play the role traditionally taken by cured pork, but is suitable for vegetarian, why not call it vegetarian bacon? Everyone knows and understands what it is, and can eat it or leave it as they choose. It just seems a lot simpler and easier than having to call it a non-meat savoury breakfast strip.
If it starts to just be called bacon, and you run the risk of getting it when you want something that tastes like meat, then fair enough - pain in the arse. Like getting a sickly pink alcopop when you've ordered cider. But as long as it badges itself as "strawberry cider" or what the chuff ever, I'll know to avoid it.