Not a liar. The reason why the permanent wing has high gold content is precisely because it is easy to accidentally touch the wing of light when you get the running map, or get the wing of permanent light when you unlock the nodes of your ancestors, both of which will lead to endless collapse. So the endless account with many ancient costumes is still quite valuable.

Crash is an adjective, and it doesn't really mean that a plane will really crash in a slight encounter. The so-called crash is actually that Wingless accidentally got the wing of light, so it is no longer Wingless.