The title of their research is "LLMs can natively read & write neural network weights". That's accurate and not sensational at all. People made posts on HN, etc., hamming up these results, but it seems like the actual authors of this research presented it professionally.

>They should be more upfront and clear with what they did from the first paragraph.

Please read the first paragraph and tell me what isn't upfront or clear about it: https://rikiyat.github.io/blog/weight-space-programming

I'd say it's spelled out so clearly that even people who don't understand this stuff could confidentally understand what they're doing here.