No it is exactly right mode for modern tech companies:
1) If it runs on my dime and my infrastructure I will optimize the hell out using most cleverly written Rust and what not and gloat about engineering prowess.
2) If it runs on users computers well then, we have carefully evaluated our strategic direction and come to conclusion that JS/TS/Electron option is the best way to go.
This is also not correct in this case since they recently rewrote the Artifacts backend from Zig to TypeScript.