Except they are not doing what you assume they are doing.
/tipoftheday simply pops up the first item in the current (and outdated) set of tips on user request in an InfoView, which is not how an actual tip of the day system works.
Not to mention how would a new player know that he needs to issue a chat command to start what's still left of the tip of the day system?
And the tutorial tip setting in options only re-enables those very few messages of the 80+ that exists alltogether which still has an effective event trigger (like selecting another player, and maybe half a dozen other things at most). The rest never gets displayed even though there's a fair amount of useful information there.