Reinventing known things and claiming that they’re novel is sort of his shtick. That said, he often does do interesting work - it just takes quite a bit of patience (which many people don’t have) to wade through the fluff and self-congratulating to get to the interesting technical meat of his writings.
I wish someone would provide a Cliff's Notes to Wolfram's 20,000 word blog posts. I'd like to see what he's figured out, but not at the cognitive load cost of having to wade through all that crap.
Like the shortest axiom for classical propositional logic using NAND in the Chapter 12, which is the last chapter, on page 773 in New Kind of Science with no proof or references?