You're right that the article has some marginal value. I think many deletionists would even agree.
The problem is risk/reward. Every WP article is a commitment to defend a topic against entropy and malice. Every article is part of the attack surface exposed to vandals and spammers.
So in the view of most of Wikipedia, articles that are fated to forever remain "stubs" have negative net value.
Reasonable people can obviously disagree about this, but I find the deletionist argument against zombie stub articles to be very compelling.