That's my point in the 2nd question when citing the incident with 3ds 9.9+ browser as people got carried away with Eshop and updated to 9.9+ and got locked for some time leading to Cubic Ninja price sky rocket. Perhaps Yellows8 knows there's a trap in the 5.5.1 that eventually kills off the exploit (Nintendo triggers the time bomb?) so he deemed the exploit as dead , while it's not officially dead yet as we found out today?
So it's basiccally Yellows8's own way to prevent people get too hyped and fall into Nintendo trap on 5.5.1, by releasing the exploit leading people thinking the exploit was patched on 5.5.1. Then some random persistent European dudes just spoilt the plan