Spirit Airlines announced Saturday it was shutting down. ZUMAPRESS.com Saturday’s Spirit Airlines shutdown is entirely on the Biden administration — and more specifically, on the faux-populism of its Federal Trade Commission chief, Lina Khan. On top of all the travelers left scrambling, 17,000 Americans just lost their jobs, while future travelers will have one less choice and the rest of the industry faces reduced competition. No, Spirit’s bare-bones approach wasn’t for everybody (paying for every checked bag rubs many the wrong way), and perhaps the business was always doomed — but there was no need for its end to be this cruel. Khan and then-Transportation Secretary Pete Buttigieg cheered as the Biden Justice Department blocked JetBlue’s bid to buy Spirit in 2024, arguing that the “industry consolidation” would be bad for consumers.…