I hate shell infection because 1) it only works in the shell, 2) it’s not stateless, and 3) depends on your working directory. I mean there’s a reason it’s called “shell infection”. Sounds like Rye specifically aims to address that issue. To each their own, I guess.
I dislike this pattern. I don't want every language/tool manager in my PATH all the time. I much prefer the direnv. I hook only direnv into my shell. Then I can do what I need with an `.envrc` in each project directory.