This is novel Rust/egui code that I imagine looks nothing like Adobe code. I've never seen their code, but it must be a mess of old C++, right?

It's considerably faster than their apps (at startup) too.

Well I hope they trust their LLMs completely, because I'm sure Adobe is currently going over their source code with a very fine comb to build a case. And they have LLMs to help with comparing too.