I don't think I know enough to comment on this, hence posting here
[The Kaoru Method: Linearizing SHA-256 via Universal Fractional Space Mapping and Carry Reconstruction](https://osf.io/jd392/overview)
More:
- [Unexpected 186-bit SHA-256 quasi-collision: Is this mathematically possible with consumer hardware or is there a flaw in my verification script?](https://crypto.stackexchange.com/questions/119199/unexpected-186-bit-sha-256-quasi-collision-is-this-mathematically-possible-with)
- [Is SHA-256 second-preimage resistance compromised? Verified collision for Bitcoin Genesis Block](https://crypto.stackexchange.com/questions/119216/is-sha-256-second-preimage-resistance-compromised-verified-collision-for-bitcoi)
- [SHA-256 quasi-collision with 184/256 matching bits](https://news.ycombinator.com/item?id=46341850)
Is this something to be worried about?