how to delete bash 3.2 from Mac OS?

how do I delete the “old” bash from Mac OS? I installed homebrew, installed bash 5.2 and set it up as the default. I disabled SIP and ran two commands and got these responses:

sudo rm /bin/bash

  • override r-xr-xr-x root/wheel restricted, compressed for /bin/bash? y
  • rm: /bin/bash: Read-only file system

sudo ln -s /usr/local/bin/bash bin/bash

  • ln: /bin/bash: File exists

According to the instructions I’m following,this should work. I’m trying to remove the installed, Apple-default 3.2 bash and redirect it to the recently installed /usr/local/bin/bash but even with SIP disabled I still get blocked