MacOS CLI version install/upgrade

So, trying to fiddle around with the CLI version a little. Ran into a problem with the CLI upgrade process.

It appears the command:

NPM_CONFIG_PREFIX=~/.joplin-bin npm install -g joplin
sudo ln -s ~/.joplin-bin/bin/joplin /usr/bin/joplin

Runs into a problem creating a symbolic link in the usr/bin directory.

I had to change the directory to usr/bin/local for it to work. I also had to delete the link that was there (it wouldn't overwrite it).

Do the CLI installation instructions need updating for Catalina and it's read-only file system?