Recently I've seen someone on Reddit trying to automate the creation of PyPI projects through GitHub Actions. The person was complaining that the first deployment couldn't use an API key for that project since it didn't exist. So I'm not surprised some people are trying to do the same for malicious purposes.
The PyPI front page lists 455k projects. If you search for "test", you'll see there's a lot of throwaway projects (note that test.pypi.org is a thing). I'm mostly an EE researcher and I'm not sure students need a low barrier to entry to PyPI, since pip and other tools support installing from GitHub without too much hassle and there are also other non-PyPI package indices. Student packages/projects tend to be abandoned soon after graduation. An archived repo (with a license...), on GitHub or somewhere else, sounds more reasonable and also has more visibility that could end in code reuse someday (through the service's own search and search engines in general). I'd love to understand why so many people repeat this meme that student and teens need trivial access to production infra like PyPI.
So, I'd say being too inclusive, allowing fully unrestricted trivial creation of projects is kinda foolish. There needs to be some extra step, be it a fee, identity confirmation, manual moderation/approval, or something else. I'm sure the PyPA devs/maintainers have ideas.