My completely unvarnished thoughts, in the hope that they are useful: I had one JIRA-ticket-worth of stuff to do on a conda environment, and was going to try to use pixi, but IIRC I got confused about how to use the environment.yml and went back to conda grudgingly. I still have pixi installed on my machine, and when I look through the list of subcommands, it does seem to probably have a better UX than conda.
When I go to https://prefix.dev, the "Get Started Quickly" section has what looks like a terminal window, but the text inside is inscrutable. What do they various lines mean? There's directories, maybe commands, check boxes... I don't get it. It doesn't look like a shell despite the Terminal wrapping box.
Below that I see that there's a pixi.toml, but I don't really want a new toml or yml file, there's enough repository lice to confuse new people on projects already.
Any time spent educating on packaging is time not spent on discovery, and is an impediment to onboarding.