I would personally choose the phrase 'aiming for consistency' over 'vibe coded' ;) That said, version 1. I'm sure there are areas to improve! We have supported building Linux apps for years, but this is our first major app for Linux ourselves.

There are similarities. Our screenshots don't show it but all three IDEs have a left-side sidebar with top tabs just like the Builder screenshots show it has as well. Definite common ideas. Much of our UI design has roots in macOS.

(Disclaimer: I work at RemObjects, and have worked on Fire and Water but not on Earth.)