There is so much confusion with alcohol in general.
When a list says 'not recommended' they should explain the reason why, so ppl can make a decison for themselves (ex. Sherry cask).
Imho, when they write 'not recommended' on bottles like glenlivet 18 or glenfiddich 12, 15, 18 etc, w/o reasoning when most ppl drink these, it cheapens the whole list and ppl disregard it.