In conclusion: Fomalhaut b is totally not an exoplanet. But personally, I think it's way cooler that we're seeing collision-produced dust clouds in real-time in another solar system! Don't think of it as losing an exoplanet, think of it as gaining a dynamically exciting Kuiper Belt!
(And boy, it's sure nice to write a big long thread about a super cool astronomy discovery instead of complaining about satellites ruining everything.)