If developers are unwilling to maintain dependencies and be good citizens of the larger language community, should they be adding those dependencies in the firs

If developers are unwilling to maintain dependencies and be good citizens of the larger language community, should they be adding those dependencies in the first place? If you're not operating in the large ecosystem then fine. But if your project is on e.g. pypi, then there is an issue. (edit: Note, yes I know the virtualenvs exist, docker exists, etc. but those are space and complexity trade-offs made as a workaround for bad development practices)