Perhaps because, HE ONLY POSTED ABOUT IT SEVERAL HOURS AGO. This is a cutting edge mod, people. Things are constantly changing, and we're updating documentation as quickly as things can be tested and verified. The next update to the guide will include new/updated instructions for the picofly 2.70 firmware, as well as the new additonal points for those having boot issues (needing to reset their rp2040 during boot to get a glitch).
A little time and grace is all that is asked in return for these contributions being made to the community.