The use of LLMs has caused Rust usage to explode.
If youre not writing the code yourself and vibing away which I think most people generally are despite the disdain around here then why would you not choose the "more performant language" (I know that isnt necessarily reality but it is a common perception).
Go's managed runtime is less valuable when the LLM is perfectly happy to slap a bunch of stuff together for you to and approximate it and doesn't complain at all when writing async rust despite some of the rough edges.
I like vibe coding but I am sceptical that a vibe coded runtime in Rust would be as awesome as the Go runtime which is written with deep expertise of Unix software and threading and many low level details that are subtle and do depend on global properties of the code to work flawlessly. It makes sense you can crank out Rust with an LLM if you know what you are doing, but if you want a GC type thing or preemptive scheduling across an N by M threading model, then you are competing against some very good code.
I agree that agents make Rust a lot more tenable for less "kernel-and-browser"-demanding tasks than it was 4 years ago, but I do not agree that they eliminate the "managed vs. unmanaged runtime" question, and to the extent they influence any of this decisionmaking at all, you have to accept the notion of not reading the code. If you're reading it, it matters that Rust makes you do bookkeeping that managed runtimes avoid.
Correction: The use of LLMs has caused every major language usage to explode.
And as mentioned in other comments, Rust slow compilation can be detrimental to LLMs + fast iteration speed. And it's not just speed, Tauri takes 20GB of disk space to compile. It's bonkers. This is npm/js ecosystem all over again but slower.
Another reason to pick Go if you're leaning on LLMs is the standard library. Often you can do more work with fewer dependencies.
I'd rather leverage world class engineers paid by Google to maintain dependencies for me than try my luck with half a dozen of 0.x crates. Plus stdlib APIs can (and are) versioned just like third party dependencies.