You're missing the point. It runs every time you show the prompt. Anything that does that is not minimal and it increases the risk of failure.
Some things that you use regularly should be kept as minimal and as stable as possible. To me that includes the shell prompt, editor, browser for example.
I am cli/vim guy - that’s my daily tools. Starship is very stable and it is useful for me. The only problem I have experienced is with custom extension I wrote myself (problem was slowness not stability).