Please improve your reading comprehension. I swear, this website is embarassing sometimes. You can still do this with an API Token. You can upload from a C64 with an API token. What you cannot do is run some random OIDC provider on your random useless domain and have PyPI magically respect it and include as part of the Trusted Publishers program. There is no point in it, because the program itself is constrained by design because it only provides any benefit at "large scale." Your random dumb server providing a login for you alone does not provide any benefits over you just using an API Token.
Any pathway to provide trusted attestations for random individual Hacker News users like yourself will, in fact, require a different design.