I would not consider them an unopened pack in the way you are thinking pack. They are in packaging but when I think pack I think multiples of cards or stickers. If we go by just being in packaging then even the swim rings or the iron-ons in the package would be called unopened packs.
There were 1-cent baseball card packs containing only one card produced until 1965. I don't think multiple cards should be a requirement. It is very hard to define though. Here are some "packs" that are iffy for different reasons:
poster packs: contents make it iffy, but wax wrapper similar to regular packs is pretty compelling
tattoo packs: (for obvious reason)
Shedd's pack: one sticker, not directly retailed
To me, what these patch packs have going in their favor is that the patch is of a similar appearance/size to a
regular wacky, so that the appearance of the pack makes it "seem" like a pack. They also likely would have been retailed in a multi-pack box like regular packs. Something like the inflatables or other packaged items don't have
these things going for them. Of course it's all subjective.