Thanks for the pointer. Maybe the existence of the examples/functions directory could be mentioned somehow in man bash?
I am fine with closing this item.

In Korn Shell, it is possible to change to another directory by replacing a string of the current directory, as in the following example:

$ pwd
/usr/lib/motd.d
$ cd usr/lib etc
/usr/lib/motd.d
$ pwd
/etc/motd.d

The current behavior of bash in Fedora 32 (version 5.0.17(1)-release (x86_64-redhat-linux-gnu)) is:
$ cd usr/lib etc
bash: cd: too many arguments

I can emulate the ksh behavior with the following function:

# emulate ksh cd behavior:
function cd () {
   if [[ $# -eq 2 ]]; then
      _NEWWD=${PWD/${1}/${2}}
      builtin cd ${_NEWWD}
   else
      builtin cd ${1}
   fi
}

but I'd rather like to have this feature in bash's builtin cd command.