You should absolutely make clear that this site was generated and may have errors. That is table stakes for stuff like this, especially when it's about financial estimates. I don't fault you for using Cursor, but be up front with your users, not just to HN.
The most glaring error is that Cursor insists on referring to a real bill that was signed into law as "hypothetical", since it happened after the model's knowledge cutoff.
Smaller, subtler things are no less misleading. The phrase "our free tax comparison calculator" implies this was created by a group, maybe a company, who might usually charge for such a thing. Lends false credibility to the project.
Strongly suggest going to the trouble of doing a cursory (ha) review of things like this before publishing.
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