I'm sure a lot of us know about the fake space shuttle colombia crash in 1986 which "killed" 6 people, but there is undeniable proof that they are still living

reference: https://aplanetruth.info/theyre-alive-challenger-crew-found-alive-and-well-30-years-since-the-disaster/

so the question i cant seem to shake, is WHY would they fake this? What are their possible incentives? I just cant really think of a good reason.

Any ideas?