I used to hold this opinion but since changing to Rust on the server and Typescript on the client, I can confidently tell you agents are so much better at Rust, especially at producing idiomatic code, than they are at Gleam.

There are reasons to love Gleam and Lustre (I like Gleam a lot), but LLMs just aren't one of them. I made the switch to Rust around May this year. Also the community is super anti-AI, arguably with good reason (how it impacts open source), and I'd recommend keeping your AI code to yourself.