Difficulty bomb ensures that forking is incredibly difficult. The code change to defeat the code change is easy to make (just delete a section of code) but you

Difficulty bomb ensures that forking is incredibly difficult. The code change to defeat the code change is easy to make (just delete a section of code) but you have to distribute clients that ship with the difficulty bomb removed on top of EIP 1559 not being implemented, on top of people actually downloading the changed version. Good luck trying to convince the Geth or other client teams to ship that version.