We (http://publicdomaincompany.com/) are going to do it if someone doesn't beat us to it first. Will be a 2023 project for us (https://github.com/breck7/copypastetaxes).
I've been a supporter of https://github.com/ustaxes/UsTaxes and they are doing amazing grunt work that will be a big part of the solution.
Also, here's a great image of the first income tax return: https://www.archives.gov/global-pages/larger-image.html?i=/h...
It used to be 1 page. IIRC my own tax return last year was well over 100 pages. 100x increase in complexity by that simple measure, and I'm not an expert but I don't think human brains have grown by that much.
Link: http://bit.ly/3hIviwL