This might work acceptably if you do most or all of your programming in Python anyway. However, if you try doing it as someone who works on a lot of different p

This might work acceptably if you do most or all of your programming in Python anyway. However, if you try doing it as someone who works on a lot of different projects within that 12-18 months, using many different languages, then the kind of dependency hell that exists in ecosystems like Python and JavaScript gets old very fast. In that environment, having every language you use invent its own toolchain and conventions for package and dependency management is anything but helpful. There is a lot to be said for having language tools that compile your code, compile or directly link in any external libraries from wherever you chose to put their files, and then simply give you back a single native executable file.