Can swagger editor load and save with a file dialogue yet? I remember that being the most annoying missing detail when trying to use it.

You are correct that the Swagger name is owned by Smartbear, however, whereas previously Swagger was used to name tooling and the specification, now Swagger only refers to the tooling built by Smartbear. OpenAPI V2 and V3 is the name of just the specification. Saying that they are the same thing causes more confusion than has already been created.