Earlier quoted context omitted.
Maybe read through the documentation and try it out. It has very robust configuration options, many pre-built modules that are ready to include in your prompt, for example, one that prints git info for the current location if it's a repository. So yes, it is kind of a competitor to p10k, but not zsh. It's just the prompt, and it just focuses on being a very good prompt tool.
Yeah, it's just a prompt replacement that does all the things that your prompt already does, but it's written in Rust.
People want something easy to use with good defaults. If that wasn't the case, shells wouldn't have a hundreds of plugins dedicated to customizing the prompt.