I used primitive and modern as a way to refer to more basal or derived traits in ant colonies that I hoped would be more accessible. This is commonly used in literature although a bit dated.
Where did I say ants don’t have cognition? You just assumed this. Also, there are no examples of playing behaviour in ant species so far. Only the bumblebee paper. If you know of any publications on this topic that I don’t know about, please feel free to share. Maybe they do, still doesn’t really change much.
Show me an insect manufacturing or using tools. Or one learning new techniques by watching others, or one teaching its offspring. These are some of the complex cognitive traits found in mammals and birds that have not been shown for insects as far as I know.
Believe me when I tell you that I have a profound interest and appreciation for insects, enough to shape career and education choices around them. But claiming that insects are cognitively even remotely on the same level as humans is not supported anywhere and a bit of a silly hill to die on.