Ubuntu offers in

#  /etc/zsh/zshrc (lines 106-108)
# If you don't want compinit called here, place the line
# skip_global_compinit=1
# in your $ZDOTDIR/.zshenv

whereas Opensuse 

#  /etc/zshrc (lines 66-71)
# The default way is the usage of the zsh built-in completer
# Comment the two below lines out, if you are on a slow machine, and
# comment the above compctl lines in.

autoload -U compinit
compinit

However, not all users are admins of their (Open)Suse installation and can edit
system files which are overriden by packages updates anyway.
Therefore, how about allowing the user to disable the compinit as well?
(One benefit being a many times faster startup time on some systems).