In additon to the colored border, you’ll also notice it has a PRICE label in the bottom right and a corresponding gold value. If you look at other PREMIUM squads you’ll see that each, in turn, also has a price listed.
I think that should be a clue that when compared to the price of a premium account they’re probably not included in that purchase.
Of course, I’m assuming you’re arguing all this in good faith and not trolling. But either way, hope your holidays are enjoyable.
When you go to the separate Logistics option, you can clearly see that all the premium squads of that campaign are included in the sale as separate formations. The same squads are visible in the campaign window, it just indicates what level they are according to the idea. I understand that the same icons can be confusing, but they simply represent premium content in the game.