Maybe not making blanket statement's would also help.
If you want to help out "other newbie's" then why not tell them how to introduce tang's properly into a tank. Anytime you add another tang to a tank with an already established tang in it...you can have issue's sometime's no matter what genus they belong in. Now there are way's to do it such as adding multiples, light's out at introduction, rearranging rockwork, taking original tang out and then introduce new specimen's then add the original one back in after a few weeks etc., etc. Knowing that you can add two of the same is also helpful information for newbie's and old alike.... imo.
Cheers,