That's a fair point, but we really don't know if Rust was added to the company or only to this project. Big companies often use multiple tech stacks anyway. In

That's a fair point, but we really don't know if Rust was added to the company or only to this project. Big companies often use multiple tech stacks anyway. In my experience the language was never a bottleneck at onboarding new people to the project. It is always the complexity of the project itself, all the non-standard in-house built things that engineers invented over previous X years and often didn't even take time to document properly. I'd personally prefer a boring / standard solution in a relatively modern tech stack I have to learn from scratch than a pile of cleverness in something I know well (let's say Java). In the former case I can learn it quite quickly from the publicly available materials. In the latter case I need to reverse-engineer all the cleverness.