Bun, the direct competition to Node.js and Deno has reached version 1.0. Therefore, it could be used in production by folks who would like to create applications today. I believe that Bun could be a game changer because it is supposed to be a drop-in replacement to Node.js while also making a lot of the tools in the Node.js ecosystem redundant.
Having a lot of options is not always the best. Having a de facto standard is better in my opinion because we can improve on this instead of using a bunch of redundant tools. Based on their benchmarks, Bun is faster than a lot of the competitors. But speed is not the thing that I am excited about. I am interested in the ecosystem and getting the tools needed to develop your app without crazy configuring on your part. I think about my students and how they can install Bun without having the headaches of installing other tools for their projects.