I did a Google search for "hacker news ruby" and "hacker news python" and then searched the top results for "gem" or "egg" or "wheel" usage. It's not a big study, but it is empirical.

Comments about Ruby say:

  - "the webpacker gem"
  - "Simple to integrate gems"
  - "supported via gems"
  - "few dozen obscure gems"
  - "the I18n gem"
  - "the ruby-each-line gem"
  - "vast amount of Ruby gems available"
  - "working with so many gems"

Comments about Python say:

  - "packaged either as a Wheel or an Egg"
  - "The numpy module is a wheel"
  - "a wheel is specifically not a source distribution"
  - "NumPy publishes a lot of wheels for a given release"

All those Python related comments are from one single comment who's author was discussing the technical differences between Eggs and Wheels as packaging formats. Arguably only the last Python comment uses "wheel" as a synonym for "package" or "library".

Python's libraries come as eggs, wheels or source packages. Ruby has gems.

Rust inherited that characteristic, what is not great. It's not a big problem either, but it's there.